Hello. I am Ken Hsiang, the Head of Investor Relations for ASE Technology Holdings. Welcome to our First Quarter 2021 Earnings Release. Thank you for attending our earnings presentation today. Please refer to our Safe Harbor notice on Page 2. All participants consent to having their voices and questions broadcast via participation of this event. If participants do not consent, please disconnect at this time. I would like to remind everyone that the presentation that follows may contain forward-looking statements. These forward-looking statements are subject to a high degree of risk and our actual results may differ materially. For the purposes of this presentation, our dollar figures are generally stated in new Taiwan dollars unless otherwise indicated. As a Taiwan-based company, our financials are presented in accordance with Taiwan IFRS. The results presented using Taiwan IFRS may differ materially from results using other accounting standards, including those presented by our subsidiary using Chinese GAAP. I'm joined today by Dr. Tien Wu, our COO; and Joseph Tung, our CFO. For today's call, I will first be going over our financial results. Joseph and Tien will then be available to answer questions during the Q&A. During our last earnings release, we talked about seeing an increasingly tight semiconductor supply chain. At the time, we indicated that we saw tight supplies of wafers components substrates and capital equipment. The tight supply environment continues to be true today. During the quarter, headlines citing semiconductor shortages have spread into daily newspapers. Semiconductor companies our customers have started to plan further out with orders being placed now for products to be delivered in 2022. Longer-term loading agreements, which seemed like an unusual request in the back half of 2020 now are being regarded as a requisite by not only us, but by our customers as well. Last quarter, we expressed that we expected the logic semiconductor industry to grow between 5% to 10% during 2021. We also stated that our ATM business generally targets to grow two times that number. Since that time, we certainly have seen an overall step-up in our business. However, we also see some constraints becoming more of an obstacle for further growth. Nevertheless even with these constraints considered, we still see an improved growth environment with our growth outlook to be on the very high end of the original range. All signs continue to point towards 2021 being a banner year for our ATM business. Meanwhile, our EMS business went through its seasonally soft quarter. The first quarter is usually when companies gauge their inventories and zero in on when to ramp down manufacturing, while getting ready for the next product cycle. As a result, for us, volatility tends to be the norm during the first quarter. This year is no different with business coming in a little behind our expectations during such order fine-tuning. This year's target manufacturing was made even more complex by bill of material constraints. Looking forward we do see various product ramps coming including new SIP and traditional EMS projects in the next few quarters. Please turn to Page 3, where you will find our first quarter consolidated results. Intercompany transactions between our ATM and EMS business have been eliminated during consolidation. For the first quarter, we recorded fully diluted EPS of $1.94 and basic EPS of $1.99. Consolidated net revenue decreased 20% quarter-over-quarter, but increased 23% year-over-year. This sequential decline was primarily driven by seasonality of our EMS business. We had a gross profit of $22 billion with a gross margin of 18.4%. Our gross margin improved by 2.7 percentage points sequentially and 1.8 percentage points year-over-year. Both margin improvements are principally the result of higher ATM business mix. Our operating expenses decreased by $1.1 billion to $11 billion, mainly as a result of lower bonus expenses during the quarter. Our operating expense percentage increased 1.1 percentage points sequentially and declined 1.2 percentage points year-over-year to 9.2%. The operating expense percentage increase is mainly the result of seasonality. On a full year perspective, we should see improvement from last year's 9% level. Operating profit was $11.1 billion, down $0.1 billion sequentially and up $5 billion year-over-year. Sequentially operating margin increased 1.7 percentage points to 9.3% and increased 3.1 percentage points year-over-year. From a total year perspective, we previously expected to be able to achieve 1.5 percentage point to 2 percentage point improvement. We now expect to be able to improve our full year consolidated operating margin by 2.5 percentage points to 3 percentage points, driven by increased scale, a friendly ATM pricing environment and SPIL synergies. During the quarter we had a net non-operating gain of $0.3 billion. This amount primarily consists of gains related to our foreign exchange hedging activities, investments and asset sales, offset in part by net interest expense of $0.6 billion. Tax expense for the quarter was $2.5 billion. The effective tax rate for the first quarter was 22%. We expect to have an effective tax rate for the year of between 20% to 21% during the full year. Net income for the quarter was $8.6 billion, representing a decline of $1.5 billion sequentially and an improvement of $4.7 billion year-over-year. On the bottom of the page we provide key P&L line items without the inclusion of PPA-related expenses. Consolidated gross profit excluding PPA expenses would be $22.9 billion, with a 19.2% gross margin. Operating profit would be $12.2 billion, with an operating margin of 10.2%. Net profit would be $9.7 billion with a net margin of 8.2%. Basic EPS, excluding PPA expenses, would be $2.26. On Page four is our ATM P&L. It is worth noting here that the ATM revenue reported here contains revenue eliminated at the holding company level related to intercompany transactions between our ATM and EMS businesses. During the first quarter, our ATM factories not only held fourth quarter production run rates as per our original expectations, our factories were able to surpass them. As you will see, we were also able to achieve higher-than-expected profitability as a result of these stronger revenues and on higher test revenue mix. For the most part, the majority of our ATM product lines were running at full or near full capacity. Our wirebond business continues to be capacity constrained, driven not by just increased unit demand, but also by unit bonding complexity. During this time, our ATM factories have remained diligent to our customers trying to supply as much capacity as possible. To cope with the current environment, our preference has been, in no particular order, to pass-through raw material price increases, correct for underperforming engagements, enter into long-term loading contracts and secure key customer relationships. We continue to work with our customers who are trying to work through an extremely challenging production environment. For the first quarter of 2021, revenues for our ATM business were $73.8 billion, up $1 billion from the previous quarter and up $7.6 billion from the same period last year. This represents a 1% increase sequentially and a 11% increase year-over-year. Our ATM revenues came in slightly ahead of our expectations. On a U.S. dollar basis, our ATM revenues grew by 3% sequentially. This marks the first time in near-term history in which ASE's first quarter had sequential revenue growth. Gross profit for our ATM business was NT$18 billion, up NT$1.5 billion sequentially and NT$4.7 billion year-over-year. Gross profits improved both sequentially and annually primarily as a result of higher manufacturing efficiency and significantly higher off-season loading. Gross profit margin for our ATM business was 24.4%, up 1.8 percentage points sequentially and 4.3 percentage points year-over-year. Our gross margin improvement was due to improved loading and a high percentage of low raw material product. ATM gross margin improvement was accomplished despite NT dollar appreciation having a negative 0.8 percentage point impact quarter-over-quarter and a 2.7 percentage point impact year-over-year. Looking forward, we do expect this beneficial product mix to reverse itself in the second quarter and even switching to a high raw material product mix in the third and fourth quarters. However, even with this product mix shift looming, we expect to be able to deliver gradually improving gross margins throughout 2021. We are well on our way to achieving full year gross margin in the mid-20s. During the first quarter, operating expenses were NT$8.1 billion, down NT$0.4 billion sequentially and up $0.3 billion year-over-year. The sequential operating expense decline was primarily driven by a decline in employee bonuses. Meanwhile the year-over-year operating expense increase was the result of higher employee salaries due to higher headcount and higher bonus accrual. Our operating expense percentage was 11%, down 0.6 percentage points sequentially and down 0.7 percentage points year-over-year. During the first quarter, operating profit was NT$9.9 billion representing an improvement of NT$1.9 billion quarter-over-quarter and an improvement of NT$4.3 billion year-over-year. Operating margin was 13.4% improving 2.4 percentage points sequentially and five percentage points year-over-year. Without the impact of PPA-related depreciation and amortization, ATM gross profit margin would be 25.6% and operating profit margin would be 15%. On page five you'll find a graphical representation of our ATM P&L. On Page six is our ATM revenue by market segment. You can see here the typical seasonal decline in the communications market segment. However, our automotive consumer and other products picked up to fill the typical seasonal decline gap. On page seven, you will find our ATM revenue by service type. The quarterly movements tend be too small but the chart taken as a whole tells a more complete story. You can see here the gradual improvement and underlying strength of our wirebond-related business. Meanwhile, our advanced and testing service types have seen a decline much of which having to do with the impact of the US EAR. On page eight, you can see the results of our EMS business and a graphical representation of our EMS revenue by application. The information we provide in regards to our EMS business may differ materially from the information directly provided by our subsidiary as they report independently using Chinese GAAP. During the quarter, our China-based factories were subject to a special government policy for lowering the risk of COVID-19 by means of reducing travel across China during the Lunar New Year holiday. China highly encouraged factories such as ours to maintain staffing levels throughout the Lunar New Year holiday. This resulted in extra unexpected labor expense. This along with softer-than-expected business, contributed to the lower-than-expected profitability. During the first quarter, EMS revenues declined 40% sequentially, primarily due to product seasonality. EMS revenues increased 46% year-over-year as a result of having an expanded revenue base of products. Our EMS gross profit was NTNT$4.2 billion, declining NT$2.8 billion sequentially and increasing NT$1.1 billion year-over-year. The lower sequential EMS gross profit was the result of lower loading due to seasonality and the higher year-over-year gross profit was the result of higher sales from a wider product base. Gross profit margin for the EMS business came in at 8.7%, which is a decline of 0.1 percentage points sequentially and 0.6 percentage points year-over-year. In addition to the aforementioned level staffing role, the gross margin sequential decline was primarily the result of lower scale during the seasonally down quarter. Year-over-year this decline is principally the result of the level staffing role and product mix. Our EMS business unit's first quarter operating expenses were NT$2.8 billion, declining NT$0.7 billion sequentially, while increasing NT$0.5 billion year-over-year. The operating expense sequential decline is the result of lower bonus expense while the annual increase is the result of China's level staffing role. Our operating expense percentage increased 1.4 percentage points sequentially to 5.9%, while declining 1.1 percentage points year-over-year. The operating expense percentage movements are driven by lower bonuses in the first quarter and sales seasonality. Our EMS operating profit declined NT$2.2 billion sequentially, while improving NT$0.6 billion year-over-year. Our EMS operating margin was 2.8%, declining 1.6 percentage points sequentially and up 0.4 percentage points year-over-year. From a full year perspective we continue to target a 4% operating margin for our EMS business. On the bottom half of the page, you will find a graphical representation of our EMS revenue by application. You can see here that seasonally driven products in consumer and communication segments each declined by six percentage points. Other segments were generally seasonally soft but were not as strongly pronounced. On Page 9, you will find key line items from our balance sheet. The only things that we would like to add here are that total unused credit lines amounted to NT$255.2 billion and our net debt-to-equity ratio dropped to 61%, the lower end of our targeted range. Page 10, you will find our equipment capital expenditures. Amounts on this are denoted in US dollars. Machinery and equipment capital expenditures for the first quarter totaled $471 million, of which $337 million were used in packaging, $118 million in testing $11 million in EMS operations and $5 million in interconnect materials and others. From the full year perspective, we currently expect to increase our wirebond capacity by about 10% to 15% during the year. We ended 2020 with slightly more than 26,000 wirebonders. We also currently expect our 2021 equipment capital expenditures to increase 10% to 15%, as compared to last year. We expect to invest roughly 65% of our CapEx on packaging equipment and 20% on testing equipment. The current environment is a challenging one. It is incredibly difficult to manage capacity allocations. We continue to see tight wafer, substrate component and capital equipment deliveries throughout the remainder of this year. It's even coming full circle for us. Some of our capital equipment vendors are telling us that their equipment delivery schedules are slipping, because of lack of semiconductors. We are well aware that perceived capacity scarcity potentially perpetuates a snowball effect with customers scrambling for even more incremental supply chain security. There are rumblings that capacity has been systemically under built for years, but we have only been capacity constrained outside of typical seasonality for just this quarter. At the very most under ordering in early times of COVID created an artificial lull in demand and capacity build. We don't believe the current situation is simply explained away by saying the semiconductor industry had underinvested, specifically to us in back end capacity. The worldwide capacity was in balance two quarters ago. For us and others, there is a resurgence of the trailing edge underway. We see longer-term shifts and product complexity, the expanded use of trailing edge technologies, and geopolitical disruption as having a hand in this supply and demand in balance. Regardless of the cause, we believe we stand to extend our competitive advantage during the coming year. Not only do you look at who has the largest capacity at this time. What you have to ask is who gets the allocation of capital equipment in these times? Who has the advantage in getting allocation of components and substrates at this time? Who invested during the last three years, while everyone else held back? Who can supply chain managers trust with their jobs to deliver on long-term loading agreements? Industry leaders like us, stretch their leads in times like these. With that, we would like to provide our second quarter business outlook as follows. For our ATM business, our ATM second quarter sequential business growth rate should be similar with our second quarter 2020 sequential business growth rate. Our ATM second quarter 2021 gross margin should slightly improve from the first quarter. For our EMS business in US dollar terms, EMS second quarter business should be similar with third quarter 2020 business levels. Our EMS operating profit margin should be slightly below full year 2020 levels.

Now, we open the floor for Q&A. A - Ken Hsiang: If you have a question, please raise your hand in Webex. First question is coming from Randy Abrams, Credit Suisse. Randy?

Okay. Yes. Thank you. Yeah. Actually, if I could ask the first question I tried to get down the guidance real quick, but I want to just make sure I have the right understanding. For IC ATM, so we should imply 5% sequential – about 5%, if I look back to last year in US dollar terms with slightly up gross margin. And then for EMS, I think I saw compared to the third quarter 2020 growth rate. Is that a sequential or a year-on-year for that growth? And then for operating margin I assume it's slightly below. So it's a good sequential improvement. But if you could just recap it just so we have the right assumption on those guidance metrics?

Okay. I can’t hear you.

I didn't write it down.

The guidance that we provided for ATM, you're correct. In terms of ATM on the top line, we're expecting the same level of growth that we saw in previous second quarter. In terms of the gross profit margin, we're looking at a slight improvement in the quarter. For EMS, we are looking at EMS second quarter. The top line will be similar to third quarter 2020 level. And the operating margin should be slightly below full year 2020 level.

Okay. If I could follow up the -- two things on the constraints. Is there a way to think about the -- how much it is limiting you or how much behind you are on IC ATM? And is it strictly a wirebond that's still the bottleneck, or do you now have constraint on your -- like more advanced packaging the flip chip and wafer Level packaging as well?

The constraint we were referring to applies to capital equipment including wirebonder also related to substrates, lead frames and other components that are required to do the final assembly. So every product is different. I mean I cannot tell you definitely it's not just a wirebonder thing. In terms of the -- how do we manage the line balance I think that's the operations job. Whenever we're missing some components or materials or try to do the line conversion, we switch back to the other assembly where we have materials in reserve. In terms of how much that limits our potential growth, it's very difficult to quantify that because the process right now is very dynamic. I won't be able to give you a quantitative number.

Okay. All right. And the second part of the guidance outlook the EMS actually picking up in second quarter. Last year did, but some years it's still down. If you could talk about the drivers for the pickup if there's some SiP projects or just existing EMS business recovering a bit earlier? And if you could give an update on the overall SiP outlook how that's now looking whether on a year-over-year or if any change versus the incremental growth you're expecting?

Okay. I think from second quarter as well as for the full year in terms of EMS, we will continue to see growth. And for this year, I think EMS will go through a typical kind of first and second half distribution of revenue. It will be similar to roughly 44-56 or 43-47 type of allocation distribution. And I think the overall growth comes both from traditional EMS as well as SiP. In terms of SiP, I think last year we went through a phenomenal growth in terms of SiP revenue. We have been entertaining many more projects and many more customers as well. And some of the new -- in terms of the new project revenues we had hit. We had about close to $400 million revenue coming from new projects and we are seeing the same kind of momentum this year. And overall I think the -- in terms of the composition of the SiP revenue, there are some mature products going through some -- gradually tapering off because of feature transition. And there is some projects that we are seeing second sourcing coming in. But on the other front, there are new projects and the -- or the newer projects that we entertain -- or we're starting to entertain from last year we're seeing them starting to also kind of expand for this year. So we're going to see decent growth in SIP overall and particularly in terms of new projects, so we're seeing still very strong momentum going forward.

Okay. And I could try to do the math. I think on the 47-53 [ph], is it the implication IC ATM you had mentioned high end of the 2x, which seems to imply U.S. dollar up high -- mid to high teens. Is EMS a similar type of growth profile factor you consolidate?

I think the overall annual growth in the EMS business will be slightly better than the ATM overall growth for the year.

Okay, great. Okay. And if I could ask a follow-up just on the -- actually two questions on the CapEx. One is the upgrade. I think if I have it right it was originally maintained at the high level you invested last year but now increasing. That's one I guess the area that relative to the prior year you're increasing? And then the second one on the wirebond at 10% to 15% year-over-year, is that more what you see as the need like based on real demand, or is it a constraint number that you would add even more if the capacity? And if I could fit a third, I'm curious the foundries -- usually they'll talk it takes a couple of years to bring up fab, so we might have a shortage for two years. Do you have a view on sustainability of the tightness? Where traditionally lead times they're stretched, but a bit shorter than building a fab. How long it looks like -- like if this looks like it may extend into next year at this stage?

The wirebonder delivery right now is one year is anywhere between 40 weeks to 52 weeks. And that's the wirebonder delivery. In other words whatever wirebonders that I've ordered now, it won't be delivered until next year. So the wirebonder lead time as well as the other equipment that go with the wirebonding line also got elongated. The wirebonder demand right now is clearly above the efficiency improvement as well as the new capital equipment that we can receive this year. So right now the wirebonder is under allocation highly constrained. Previously I made a comment that for the whole year of 2021, we will see wirebond constraint. My view remains the same except that the wirebonder constraint might last a little bit longer. The back-end equipment has a shorter lead time comparing to the fab, so I will not draw comparison between one to the other. But right now the supply/demand imbalance is obvious for the whole industry, which is why many of our customers who already signed long-term agreement and we are talking about how do we collectively through the design optimization material standardization, we can collectively improve the efficiency to support them for 2021 as well as 2022.

Okay, great. That's helpful. And I guess just a follow-up. If you could clarify like the increase in CapEx, it sounds like that might be an area you could place order to get additional tools. So was there kind of a -- versus the prior framework where the new spend is directed?

The CapEx right now is literally across the board. We're seeing the test equipment. We're seeing the fan-out equipment. We're seeing the bumping equipment. We're seeing the wirebond equipment. The -- almost all kinds of equipment where we're issuing CapEx. Right now we are working with our suppliers, trying to prioritize delivery schedules. In terms of the total equipment that we plan to order, we will stay at the up level -- the high level, if not exceeding last year. In terms of the actual delivery, that is what we need to do from an operational perspective. Now, why are we placing order knowing that we have such a low lead time, because our customers' development and product cycle, as well as the long-term service agreement dictates that. We're working closely with our customer to understand the demand profile long term. And all of the capital equipment expansion we'll take that into consideration.

Okay. Great. No, appreciate the color. Thank you.

The next caller we have is Gokul from JPMorgan.

My first question -- yes, can you hear me?

Yes. We can hear you.

All right. Thank you. My first question, could you talk a little bit more in detail about what are you seeing? What are the nature of these longer-term commitment partners? Are you talking about two to three-year fixed price, fixed contact -- fixed volume kind of orders? What does that mean for ATM pricing, margins, et cetera? And are these primarily for wirebond, or are we also seeing this spread to other areas in advanced packaging as well? Could we talk in a little bit more detail about what are the nature of these kind of longer-term committed orders that you're getting?

The long-term service agreement depends on customer. Each one is different. I will not comment in detail on that. The comment that I can make is, the service agreement right now covers more than just the wirebonder. It was wirebonder the second half of 2020 and now we're spreading into flip chip and the other areas, because we do see a general constraint of the assembly capacity. In terms of the pricing environment, the pricing environment remains friendly. But as you know, we do not do tactical pricing. What we're doing right now is, we're working closely with our customer to reflect the raw material and the other component pricing increase we took that into account. And we're also working closely with customers on long-term service agreement in terms of total demand, the capacity we need to build on behalf of their demand. The only area that I would like to comment is, there are specific sectors where we have a super hot run, as well as the expedited product requirement. And normally we will have the expedite fee to apply for those particular cases. But in general, the price environment remains friendly. And I believe that condition will at least applies to the whole year of 2021 if not longer.

Thank you. Thank you, Tien Wu. If I may also ask about chiplets and the 2.5D, 3D packaging, clearly a lot of your compute customers, especially seem to be talking about this in a very aggressive fashion. Could we refresh what is ASE's view on this area? When we think about the CapEx increase, are we allocating some of that CapEx to your fan-out as well as 2.5D packaging efforts as well, or most of it is still going to come a little bit later?

Well, I think, you can see from the general -- the mega trend, you understand that for the 2.5D, the 3D, or the chiplet, whichever architecture you're referring to, there has been growing acceptance, as well as growing demand from all regions on all application sectors. So ASE has been developing with our key customer for those architecture. So that has been in place for quite some time. Now, the 2020 and the 2021 scenario, as we're in right now, has modified the situation a little bit in the sense that because we have long-term service agreements with all of our key customers, the chiplet, the 2.5D, the fan-out also becomes a strategic development requirement, as part of that overall long-term service agreement. So in other words, as we're going through, better delivery cycle with our key customers, we are expected to do more development with them, trying to further improve the efficiency and the performance from an architectural standpoint, as well as from a process point. I'm not sure, the exact question that you're asking, but I believe, those are the answers that I can offer you today. Thank you

Got it. Thanks, Tien

Are we all set there, Gokul?

Yes. Well’ I’ll go back into the queue. Thanks.

The next question will be coming from Bruce Lu, Goldman Sachs. Bruce, are you on the line?

Yes. Yes. Thank you for taking my question. A very great result. Can you give us a little bit more color in terms of 2021 ATM overall? I look at like the first quarter revenue was very strong. Do you expect the same year-on-year performance for the whole year? And also, for the profitability, the gross margin seems to improve more than 2.5 percentage points already, but the company was guiding only that 2.5 percentage operating margin improvement. I would be greedy to ask for a little bit more because of the operating level. Thank you.

I think, the overall growth momentum in terms of ATM, remains to be strong. And in the previous earnings call, we were saying that we will be -- our overall growth will be two times of the logic market growth. And that -- I think that principle remains and although we're seeing the overall industry is kind of -- growth is kind of stepping up, but we're -- because of the -- some of the capacity constraint, we're now saying that, our overall growth should be at the high end which we actually said in the last call, we're saying the -- we're expecting the growth to be anywhere from 10% to 20%. And we are seeing that the growth likely to be reaching the high end of the range. In terms of profitability, I think for the growth level, we'll continue to see sequential growth in our gross margin, as we continue to enlarge our overall operation, also improving the efficiency that we have. And for the whole year, we are very confident that we will be reaching the mid-20% level. The operating margin improvement that you mentioned is really on the consolidated basis on holdco level that we're projecting 2.5% to 3% improvement now. So, when it translates to ATM, of course, the improvement will be higher because, we're setting the -- we're only setting the EMS operating margin target to be 4% for the year.

Okay. Thank you. Can I track down a little bit for the ATM gross margin improvement in the first quarter? The gross margin was improved by 180 bps, compared to the previous quarter, but the earlier guidance for the first quarter of GPM for ATM is flat. So, where are the positive surprise coming from? And can you also give us a rank in terms of the gross margin amount like different business in ATM, such as wirebonder testing, flip chip SIP, what was the rank for the gross margin now?

We don't give out separate gross margins in our different business. But as a whole I think the improvement that we see -- that we saw in the gross profit margin in this quarter largely coming from -- first of all the higher-than-expected revenue that we can generate in the quarter. The other is really -- we have a higher test revenue as well. In terms of the percentage of our overall revenue test percentage is higher than expected. So that leads to a better-than-expected gross margin performance in the quarter.

Just one additional comment. The -- when we offered the guidance last year we were planning for the seasonality. In other words the communications sector will go through the typical Q1 and Q2 seasonality. At the time, we were planning on some of the equipment dealing with the communications sector might not be fully utilized as well as the test equipment, as well as the assembly or the SIP equipment. What has transpired in the first quarter was because of the loading situation and strong demand we were able to collectively cooperate with our customers trying to utilize some of the idle equipment that would have been underutilized otherwise. And that as a result improved the revenue stream, as well as the gross profit. That is just another comment. We believe the similar thing will permeate into Q2. In other words what is unique about 2021 years we sort of removed from the typical communication sector seasonality in Q1 and Q2. Now having said that in Q3 and Q4, we will go through the reverse part of the seasonality. So right now from the operation execution wise we have to work very hard to secure all the supply, all the equipment and all the necessary resources to make sure that after clear Q1 execution, we exit Q2 well and we can deal with the second half including the ATM, as well as SIP, as well as the traditional seasonality of the communication sector. So overall I think 2021 will be a very exciting year. Now in terms of the supply situation the cover substrates, covers lead frame ABF substrate capital equipment that you're all very familiar with we will try to give you a quarter-to-quarter update. As of today, we have done a decent Q1 because all of the factor that Ken Joseph and I have just outlined, we are optimistic about Q2 and we're quite excited about the second half of 2021. I mean there is some headwind, the NT dollar that we have not discussed much about it the other type of constraints and of course the general global political situation as well as the pandemic. But with all of this considered, we have given you the best guidance that we believe is pertinent to the current -- the uncertainty in scenario. I hope that clarifies a lot of the questions about Q1 and also the outlook for Q2 and the second half.

Thank you. Can I ask a question about the EMS? I mean the guidance for the second quarter for EMS grew about like 10%, despite the typical low seasonality. How much is due to the Asteelflash acquisition? And also the consumer segment in EMS in first quarter seems to go down -- went down a lot. Do you see a rebound in the second quarter as well for the consumer segment in EMS?

Second quarter compared to first quarter, we're seeing that both the -- I think really it's the organic growth that we're going to see largely because of the sequential growth is mainly from the supply chain security continuity. I think a lot of the customers are -- because in the whole value chain there is -- there's constraints in terms of component and some of the material supply. And I think some of the customers are really bumping up their inventory hoping to get the -- get their safety stock go up. So we're seeing an uptick in second quarter, which is not a very -- not a typical second quarter performance, but that's what we're seeing now for our EMS business in second quarter.

So the whole year -- how do we see the whole year revenue growth for the EMS because nowadays seasonality doesn't really seem to be a good reference anymore?

Like I said the -- in terms of the overall EMS business, we're expecting kind of a 44-56 kind of split between the first and second half. So I think the -- going into the second half, we will see new products coming on screen and we're seeing more product launching and then we'll go back to the typical seasonality seeing a stronger -- much stronger uptick in the second half.

Okay. Let me try to squeeze one more question. I mean, we do see a somehow different production iteration rate especially the wirebonder between AC and a lot of Chinese OSAT makers. I mean most of the companies in OSAT are having like extremely high iteration rate. But China is high, but not -- it's like a step down comparing to most of the Taiwanese guys. Can you let us know what happened and why is that?

Well, I think the supply security applies somehow into that scenario. In other words, if a supplier that has a longer working relationship who can cooperate not only the assembly complexity for you the quality, who can also secure better component molding compound as well as the lead frame and substrate supply. I believe that plays into the fact why people tend to place more order even though it's on the allocation mode just to prefer to work with the ASE or our peers in Taiwan. I can't really comment on the China OSAT because I'm sure you know their scenario better than I do. But I think the product complexity, the product security and the geopolitical sentiment might play, might not play into their decision. That you have to talk to the customers.

Tien, don't get me wrong. I'm fully agreed that ASE should be -- should have a much stronger customer demand. But your customers are actually buying or like are in serious shortage. I mean they need to grab like the dying people they grab whatever they have, right? So the gap seems to be a bit larger than I expected. So that's why I tried to get some color.

That's precisely the point. I think when things are tight, I think most of the customer will look for the safest bands. And given our scale and given the leverage that we have in terms of sourcing, capital equipment as well as materials. I think we are much safer bet to our customers. That's one front. And the -- I think the other one is that given the geopolitical situation, I think there is a growing concern on the longer-term or mid to longer-term sustainability of some of the Chinese players. I think it does play into the current situation a bit.

I see. Understand. Thank you. I’ll go back in the queue. Thank you.

All right. Thank you. Next question is coming from Roland Shu of Citi. Roland?

Hi. Thanks a lot for taking my question. And just one quick question on the CapEx. So I think for today, I don't hear you update your total CapEx spending plan this year. So how is the CapEx spend being planned this year?

I think Ken briefly mentioned that this year, we are expecting to spend roughly 10%, 15% more than we spent last year in terms of equipment CapEx. And this is really to support the surge in demand that we're seeing now. And although we are -- we kind of brought up the overall CapEx spending amount this year, but in terms of actual spending it really depends on the delivery that we will have. But nonetheless, I think that's the current situation. We are upping our CapEx. And in terms of distribution, I think, out of the total spending roughly 65% would be for assembly, we're up 21% for tests, 12% for EMS and the rest for our material. I think that will be the distribution for this year.

Understood. So it sounds like I think that the total number should be somewhere around $1.9 billion to $2 billion you are planning right?

Yes. Last year we spent close to $1.7 billion. And this year…

Yes and 10% to 15% higher.

Yes. Correct.

Yes. Okay. Cool. Thank you. And then probably 80%, 85% for assembly and testing. So our question is when you look at TSMC's CapEx spending on advanced back-end and their mark making is going to be around $3 billion this year. So this actually is much higher than your total spending about $2 billion this year. But does it mean that you have to raise CapEx spending significantly going forward if you are going -- also doing -- trying to do more advanced packaging business?

Well, the comment about the TSMC CapEx for the back-end. And I think the first clarification I would like to make is you really cannot make a -- it's not a direct comparison. The CapEx that they're referring to for their back-end versus the CapEx we are referring to for the assembly equipment are very, very different in nature. If you really go back to the CapEx the equipment list and you understand that. So there is no direct comparison that I can draw between that levels. Now the second comment is the -- if our customers demand us to engage in the type of configuration or the architectural design where our customer are designing with foundry suppliers then we are obligated to work with our customer to come up with our proposal. Our proposal could be in the form of what the foundry is using, but it might not be in the form, and it's up to the customers how to design their packaging the architecture with us. The -- so that is a hypothetical question. Right now we are engaging with several customer, trying to explore our end of the proposal. Now in some form, there will be overlap. But in the majority of the form it will be quite different, right? So I don't believe our CapEx will be at the foundry level, because in nature it is extremely different. Also in terms of -- the variety is also quite different, because we're not dealing with the large high-volume capacity for a few customers. The process and the architectural design we need to come up with has to be able to fit into the application segment for a basket or a number of customer interchangeably and that is the key difference between the business model versus the CapEx.

Okay. So, Tien, correct me if I'm wrong. So, you are pretty much meaning TSMC is building its technology and proprietary technology for their customers. And this technology probably is different from the platform technology you are doing for customers product across the board. Am I reading you right on that?

Yes, that I believe -- well, again, it's not what the ASE wants; it's what ASE customers want.

Understood. Okay. Thank you. And I think a follow-up question is for -- in the past you said for every $1 CapEx you invest on assembly it probably will generate about NT$1 new revenue in the first year and more than NT$1 new revenue generation for testing for the first year. So, for the CapEx you are spending now and because of this capacity tightening, are you still going to generate a similar return for the CapEx or investment you invest in your new capacity now?

Well, I think as a rule of thumb NT$1 of investment in packaging we can generate about NT$1.20 of revenue on any -- and for tests NT$1 of investment can generate about NT$0.50 of revenue. So, from a blended point perspective, I think NT$1 of -- what we're seeing is in terms of assembly and test, NT$1 of investment should generate NT$1 of revenue for us -- a blended revenue for us to make it an economically viable investment. I think the -- from a different angle to look at TSMC's investment into back-end, that's totally different scenario.

Yes. I know it's very different. So, in general, you said for the back-end you probably will have -- for every NT$1 investment, you probably will generate NT$1 return. So, this is still the thumb rule still valid, right?

That's still the rule, yes.

Okay. Cool. Okay, thank you. Thanks for taking my question. Thank you.

The next caller we have is Szeho Ng. Szeho, you're working nine to six?

Hey, I'm in Hong Kong. Yes. I have two questions for you guys. Anyway a good result. First one regarding the wirebond delivery, I recall that in Q1 you got roughly a thousand hundred wirebonders, right? So, I basically want to note the wirebonder delivery schedule for the rest of this year.

I think currently we're looking at 3,500 to 4,000 bonders for this year addition. And we're expecting full delivery by maybe October-November timeframe. It will be delivered progressively. And I think full delivery were expected by October-November timeframe.

Okay. Got you. Okay. All right. And then the other one is on the housekeeping. What is the utilization for your wirebonder business and testing back in Q1? Where rough number would be fine?

I think in terms of packaging, we're around 85% and for tests around 80%.

That's go at peak utilization right I believe?

Yes, that's pretty much -- we're pretty much maxed out.

Okay. Good. And last one on the dividend policy, any update compared with three months ago?

No, I think we've announced it already. It's going to be NT$4.2 this year and the payout ratio is roughly 65%.

Okay. And that will be the rule of thumb for the future -- at least, for the near future, right?

Yes. Yes.

Okay, great. Congratulations on a good results.

Thank you. We don't have any additional hand raisers in the queue. [Operator Instructions]

Okay. Thank you for attending our first quarter earnings release. See you next time.

Thank you.

Thank you.