--- title: "The 1,000th polishing machine shows how chip packaging turned into a front-end problem" date: 2026-11-09 category: Chips & Compute site: NeuroAI canonical: https://neuroai.site/a/na-chips-hwatsing-cmp-packaging language: en --- # The 1,000th polishing machine shows how chip packaging turned into a front-end problem > Hwatsing shipped its 1,000th CMP tool in April 2026, tracking a quieter shift: stacking chips now demands front-end precision. In a cleanroom in Tianjin, a machine the size of a delivery van holds a silicon wafer against a rotating pad and grinds it flat. The process removes material a few atoms at a time, and it repeats dozens of times before a chip is finished. The machine is a chemical-mechanical polisher, or CMP tool. It is the least photographed equipment in a fab and one of the easiest to underestimate: without it, layers of copper and dielectric cannot be built on top of each other with any hope of working. On 7 April 2026, Hwatsing Technology (华海清科, 688120.SH) shipped its 1,000th CMP tool. The number matters less than the trend behind it: polishing is moving from a front-end chore into the middle of advanced packaging. ## Why stacking chips needs polishing Every time a layer is added to a wafer, the surface has to be flattened before the next one goes down. As transistors moved to fin and then gate-all-around structures, the number of polishing steps per wafer rose to roughly 35 to 50, according to research cited by Chinese brokerages covering the company. Advanced packaging adds a second family of steps. Building a 2.5D interposer, thinning a die to a hundred micrometres or less, exposing through-silicon vias, or preparing two wafers for hybrid bonding all require surfaces flat to within nanometres. A scratch or a dished centre kills the bond. This is why packaging has started to look like front-end manufacturing. The tools, the cleanliness requirements and the process control are converging, and the suppliers who already sell into fabs have an advantage over those who only serve assembly houses. ## The numbers behind the milestone Hwatsing's 2025 revenue reached RMB 4.65 billion (≈ US$655M / HK$5.11B), up 36.5%, with net profit of RMB 1.08 billion (≈ US$153M / HK$1.19B), up 5.9%. The gap between those two growth rates is the story of the year: revenue grew six times faster than profit. Gross margin fell 1.4 points to 41.8%, and net margin dropped 6.7 points to 23.3%. The company is spending heavily on new products — ion implanters, wafer thinning, dicing, cleaning — and on capacity, with headcount up 38% to 2,654. Orders say more than the income statement does. At the end of May 2026, CMP backlog stood at RMB 6.33 billion (≈ US$891M / HK$6.96B), representing 307 machines — about nine months of output at the 2025 pace — and the company has said monthly shipments should exceed 60 units by the fourth quarter of 2026, up from an average of about 33 a month in 2025. ## A market share that is unusual for a Chinese toolmaker In most semiconductor equipment categories, domestic Chinese suppliers hold a small slice. CMP is an exception. Hwatsing accounts for more than 90% of CMP tools shipped by Chinese manufacturers, and at some leading domestic fabs its share of purchases has reached the same level. That position was built on being early and being adequate at the same time. By its own account, the company shipped China's first commercial 12-inch CMP tool, then improved it across generations while foreign suppliers faced delivery delays and licensing friction. Fabs that could not wait qualified the domestic option, and once a process is qualified, switching back is expensive. The remaining gap is at the very leading edge, where process stability over long runs and service depth still favour the two established global suppliers. That gap is narrowing, but it has not closed. ## The capacity trap The uncomfortable part of Hwatsing's position is that demand is no longer the constraint — its own factories are. The backlog alone would take months to clear at current output, and the company is building a Shanghai base intended to lift CMP output beyond 400 tools a year by 2028. In the meantime, growth has to come from mix. Thinning equipment, ion implanters and wafer reclaim services all carry different margins, and the company has warned that its ion-implant business is still in the customer-validation stage. Selling a second product into a fab takes years; the first product's reputation helps, but it does not shorten qualification. There is also customer concentration: the top five customers accounted for 64% of 2025 sales. For a toolmaker, that is normal — there are only a handful of fabs in China large enough to buy in volume — but it makes the order book lumpy. ## What this says about the wider build-out For years, the story of China's chip supply chain was about lithography: the one tool that could not be replaced. CMP tells a different story, one where a domestic supplier reaches technological parity in a narrow category and then discovers that the hard part is scaling service and manufacturing rather than solving the physics. That is a more ordinary industrial problem, and a more tractable one. It also means the next constraint in advanced packaging may not be a machine at all, but the patience required to qualify it at every customer, one process step at a time. ## Key takeaways - Hwatsing (华海清科) shipped its 1,000th CMP tool in April 2026 and held RMB 6.33 billion (≈ US$891M / HK$6.96B) of CMP orders at the end of May, a backlog of 307 machines. - 2025 revenue rose 36.5% to RMB 4.65 billion (≈ US$655M / HK$5.11B) while net profit grew 5.9% — expansion into new tool categories is compressing margins. - CMP matters more each year because 2.5D packaging, die thinning and hybrid bonding all depend on nanometre-level planarization, moving packaging toward front-end precision. ## Honest limitations Revenue, profit, margin and headcount figures come from the 2025 annual report and the company's earnings-call record, cross-checked against China Securities Journal and Cailian Press. The 1,000th-tool shipment is from a company announcement dated 7 April 2026. Backlog and unit figures for May 2026 come from a brokerage note summarising company disclosures and should be treated as dated snapshots, not audited numbers. The "90%-plus" domestic share is the company's and analysts' characterisation, not an independently measured market statistic. Claims about parity at leading-edge process steps are the company's own; I could not verify them against fab-level data, and the 35–50 polishing-step range is a brokerage estimate. ## What readers can do now - When reading packaging capacity announcements, ask which steps require CMP, thinning or bonding tools — those are the schedule-critical items, not the floor space. - For equipment suppliers, watch backlog-to-capacity ratio rather than quarterly revenue; it reveals whether growth is demand-limited or supply-limited. - Treat "domestic substitution" claims in equipment as a qualification timeline, not a market-share number: a tool wins share only after it survives a customer's process window. --- Published by NeuroAI (https://neuroai.site/) — https://neuroai.site/a/na-chips-hwatsing-cmp-packaging Free to quote with attribution and a link to the original.