--- title: "AMD's AI chips pass through plants it sold in 2016 — and that deal still binds" date: 2026-11-09 category: Chips & Compute site: NeuroAI canonical: https://neuroai.site/a/na-chips-tongfu-amd-packaging-lock language: en --- # AMD's AI chips pass through plants it sold in 2016 — and that deal still binds > Tongfu Microelectronics packages more than 80% of AMD's processors, and its 2016 joint-venture structure explains why that grip is so hard to break. In Penang, rows of finished processor packages sit under inspection lights before being sealed into trays and shipped. The building used to belong to AMD. It still carries AMD's name on the joint-venture paperwork, but the controlling shareholder is a company from Nantong, in Jiangsu province, that most people outside the chip industry have never heard of. That company is Tongfu Microelectronics (通富微电, 002156.SZ). It is now the fourth-largest outsourced packaging and testing house in the world, and the largest single channel through which AMD's processors reach the market. The arrangement is easy to describe and hard to unwind: Tongfu owns 85% of AMD's former Suzhou and Penang assembly plants, AMD keeps 15%, and the venture packages more than 80% of the processors AMD sells. ## A factory purchase that turned into a position In 2016, Tongfu and China's national semiconductor fund paid US$371 million for 85% of AMD's Suzhou and Penang sites. At the time it looked like a contract manufacturer buying someone else's back-end capacity. It became something closer to a strategic partnership: Tongfu received a full licence to AMD's high-end packaging technology, and AMD received a supplier with an incentive to keep its lines running. A decade later the two plants are the group's profit engine. In 2025, the Suzhou site booked revenue of RMB 7.97 billion (≈ US$1.12B / HK$8.77B) and the Penang site RMB 9.41 billion (≈ US$1.33B / HK$10.35B) — together RMB 17.38 billion (≈ US$2.45B / HK$19.12B), or about 62% of group revenue, with combined net profit of RMB 1.45 billion (≈ US$204M / HK$1.6B). Penang is where the technical story moved last year. Packaging for 3nm multi-chip products passed customer qualification, and bumping plus wafer test started production in October 2025 — steps that used to sit with the customer or with a separate supplier. ## What the group numbers say Tongfu's 2025 annual report, published in April 2026, shows revenue of RMB 27.92 billion (≈ US$3.93B / HK$30.7B), up 16.9%, and net profit of RMB 1.22 billion (≈ US$172M / HK$1.34B), up 79.9%. Gross margin was 14.59% — a reminder that packaging remains a thin-margin, capital-heavy business even at the top of the market. The mix is shifting. FCBGA substrate-based packaging, the format used for large processor dies, now accounts for more than a fifth of revenue and earns a gross margin close to twice that of conventional packaging, according to the company's annual report. That single line explains why profit grew four times faster than sales. The first nine months of 2026 continued the pattern: revenue of RMB 24.89 billion (≈ US$3.5B / HK$27.4B), up 23.7%, and net profit of RMB 3.06 billion (≈ US$431M / HK$3.37B). Roughly RMB 1.68 billion (≈ US$237M / HK$1.85B) of that profit came from investment gains tied to supply-chain holdings rather than from packaging itself — a distinction that matters when reading the headline growth rate. ## Why the relationship holds Packaging is not a commodity swap. A chip designer and its assembly partner co-develop the substrate layout, the thermal stack, the underfill chemistry and the test programme months before volume starts. Moving a product means re-qualifying all of it, and paying for yield losses during the ramp. The equity structure adds a second layer. AMD owns a slice of the plants that package its chips; Tongfu owns the rest and depends on AMD for the majority of its advanced workload. Neither side can walk away cheaply, which is precisely why the arrangement has survived two generations of AMD products. For AMD, the value is capacity certainty. For Tongfu, it is a guaranteed seat at the table when a new processor generation is being defined — the point where packaging choices are actually made. ## The uncomfortable parts Customer concentration is the obvious risk. Tongfu's own filings describe AMD as the source of more than 80% of its packaging orders; a slip in AMD's server roadmap would arrive at Tongfu's factory gates within a quarter. The second risk is geography. Penang is offshore capacity, which helps with origin rules but exposes the group to tariff and export-control shifts that have nothing to do with yield. The third is capital. Tongfu plans up to RMB 9.1 billion (≈ US$1.28B / HK$10.0B) of investment in 2026 across plants, equipment and R&D, against a revenue target of RMB 32.3 billion (≈ US$4.55B / HK$35.5B). In a business with 15% gross margins, that is a lot of depreciation to absorb if demand cools. ## Key takeaways - Tongfu Microelectronics (通富微电) packages more than 80% of AMD's processors through a joint venture it controls 85% of, bought from AMD for US$371 million in 2016. - 2025 revenue reached RMB 27.92 billion (≈ US$3.93B / HK$30.7B) with net profit up 79.9%; FCBGA packaging now exceeds a fifth of sales at roughly double the margin of older formats. - The Penang plant qualified packaging for 3nm multi-chip products and added bumping and wafer test in late 2025, moving the group up the value chain — but AMD concentration and heavy 2026 capex remain the core risks. ## Honest limitations All financial figures come from the 2025 annual report and the 2026 third-quarter filing, cross-checked against coverage by Securities Times and the China Machinery Industry Federation. The "more than 80%" share of AMD's packaging orders is the company's own description in its annual report, not an audited statistic. The claim that FCBGA margins run "close to double" conventional packaging is the company's characterisation; it does not publish a segment margin. I could not independently verify yields at either plant, and I have not adjusted the 2026 profit figure for the investment gains beyond noting their size. Trade-policy exposure is described qualitatively because the specific tariff treatment of Penang output in 2027 is not yet settled. ## What readers can do now - If you track AI hardware, watch packaging capacity announcements rather than GPU launch dates; substrate and assembly slots are booked earlier than chips are sold. - Read operating profit, not net profit, for companies like this one: investment gains from supply-chain stakes can double headline growth in a single quarter. - When a supplier's largest customer also owns 15% of the plant, treat "customer concentration" as a structural feature, not a temporary condition. --- Published by NeuroAI (https://neuroai.site/) — https://neuroai.site/a/na-chips-tongfu-amd-packaging-lock Free to quote with attribution and a link to the original.