Shenzhen HFC
深圳市鸿富诚新材料股份有限公司 (301716.SZ) — a domestic-substitution play on AI-accelerator thermal interface materials, priced at debut well ahead of what the reported run-rate supports
- Day-1 high conflicts across sources. Forbes and most Chinese-language outlets report an intraday high of RMB 630.01 (+719.6%); one 21st Century Business Herald flash cites RMB 691.74 (~+800%). This report uses 630.01. The closing print was not confirmed at time of writing. The RMB 44.65B market cap cited below is an intraday snapshot at RMB 596.
- Use-of-proceeds framing conflicts. Forbes says most proceeds fund research centers in China. Per the prospectus, the R&D center is RMB 230M of RMB 1.22B planned (~19%); the production base (RMB 340M) is the largest line. Prospectus allocation is used here.
- Gross vs. planned raise. Plan: RMB 1.22B. Actual: 18.7306M shares × RMB 76.86 ≈ RMB 1.44B (our calculation; Forbes reports “1.4 billion yuan”), i.e. roughly RMB 220M of over-raise.
- Thermal-segment gross margin series differ by outlet (e.g., 49.83%→72.93% for FY23→FY25 vs. a 52.03%→85.01% series from another outlet). Likely a scope difference (sub-product vs. full segment). Only FY23→FY25 segment endpoints are used here.
- June-2025 capital increase is unverified. A single outlet (Rui Caijing) dates a third increase at RMB 8.98/share (~RMB 505M valuation) to June 2025. The price sits near the December 2022 round (RMB 8.80) and far below the RMB 42.71 secondary four months later, which points to a possible dating error. Treat as unverified pending the prospectus text.
- Inferred identities. The prospectus anonymizes the Nov-2025 transferor as “Enterprise A”; the identification with Huawei-linked Hubble rests on matching the 4.79% stake and on press reporting. Likewise, tying anonymized customer “Company B” to Huawei is press inference, not a company disclosure.
- Biographical and wealth figures. Zhao Jianping’s birth year is 1963 per Leidiwang and Forbes’ stated age; Rui Caijing says 1965 (1963 used). Forbes’ net-worth figures (Sun $1.7B; Zhao $1.3B) are estimates. Forbes summarizes Sun’s early career as plastics sales; the prospectus lists him as head (“负责人”) of a plastics workshop from 1987.
- Financial-data status. FY22–FY25 figures come from the prospectus (FY25 audited); 1H26 is post-audit; the 9M26 figures are unaudited management guidance ranges. Quarterly run-rate math and trailing P/E figures are our own derivations.
Shenzhen HFC was founded in May 2003 in Shenzhen as an electronic functional-materials supplier spanning thermal interface materials (TIM), EMI shielding and microwave absorbers. It is a national-level “Specialized, Refined, Distinctive and Innovative” (专精特新) “Little Giant” with subsidiaries in Chongqing, Zhejiang, Wuhan, Malaysia and Thailand. The formation story is not a research-lab spinout: it is a customer-proximate, self-funded start-up run by two in-laws, with control concentrated in that pair to this day.
Born 1968; high-school education. Ran a plastics workshop (保祥塑料厂) from 1987, then spent roughly sixteen years in adhesives and plastics distribution and sales (Haote Adhesives, Liba Adhesives, Haiyan Haicheng), building the electronics-manufacturing customer network that seeded the business. Founded the company in 2003 with RMB 500K of registered capital (his contribution: RMB 255K, 51%) and served as executive director and general manager for 22 years. In June 2025 he handed the GM role to Dou Lanyue, a 2004 hire who came up through quality, engineering, procurement and manufacturing, and moved to chairman only. Post-IPO he holds 24.02% directly (17,996,849 shares) plus indirect stakes via employee vehicles; Forbes estimates his net worth at $1.7B.
Born 1963; high-school education; Sun’s brother-in-law (his sister’s husband). Former plant head at a quarry (1992–2006). Contributed RMB 245K (49%) at founding, served as supervisor until October 2021 and as director since. Holds 19.48% post-IPO. The two signed a concert-party agreement in July 2021 and together control 67.86% of votes. Forbes estimates his net worth at $1.3B.
Dou (b. 1982, GM) is the internally promoted operator; Zhou (b. 1984, deputy GM) runs the sales line; Lin (b. 1980, deputy GM & CFO) has run finance since 2004 and is a cousin of Sun’s wife. All three earned above RMB 1M in FY24.
HFC sells thermal and EMC materials into AI accelerators, optical modules, data centers, 5G, automotive and consumer devices. Thermal materials and components were 80.77% of main-business revenue (RMB 569M) in FY25. FY23–FY25 revenue CAGR is ~65% and net-income CAGR ~177%. The growth profile, however, is a step-change in 2H25 followed by a flat quarterly run-rate (see below), not a smooth compounding curve.
(peer avg ~34.8%)
| (RMB, 100M) | FY22 | FY23 | FY24 | FY25 | 1H26 |
|---|---|---|---|---|---|
| Revenue | 2.45 | 2.60 | 3.30 | 7.07 | 4.35 |
| YoY | — | +6.3% | +26.9% | +114.3% | +66.3% |
| Net income | 0.38 | 0.35 | 0.72 | 2.70 | n.a. |
| Net income ex-non-recurring | n.a. | 0.32 | 0.70 | 2.64 | 1.75 (+103%) |
| Blended gross margin | 47.5% | 46.4% | 52.3% | 65.6% | 68.2% |
Oriented graphene TIM addressing warpage-driven thermal failure in high-power AI packages. Management claims to be one of very few domestic producers at scale. Carbon-based pad revenue: RMB 36M (FY23) → RMB 252M (FY25), 35.8% of sales.
Liquid-metal / carbon composite structures, supplied for server GPU testing. Revenue ~RMB 0.4M (FY24) → RMB 192M (FY25), 27.2% of sales. Very short production history; durability of demand is unproven.
SMT conductive foam, wrapped foam, water-based absorber coatings (2–100 GHz coverage). Price pressure from consumer-electronics customers has taken FY25 gross margins to 30.0% (shielding) and 47.1% (absorbers), versus 72.9% for thermal.
Quarterly run-rate (our derivation): revenue was RMB 262M in 1H25, 226M in 3Q25 and 219M in 4Q25, then RMB 435M in 1H26 (~218M per quarter). Backing out management’s 9M26 guidance (RMB 640–680M) implies 3Q26 revenue of ~RMB 205–245M, i.e. -9% to +8% YoY. On ex-non-recurring net income, implied 3Q26 is ~RMB 68–90M against ~100M in 3Q25, or -32% to -10% YoY. The +114% (FY25) and +66% (1H26) headline growth rates are largely base effects; sequentially the business has been flat for four quarters.
Customers. Named existing customers include Wistron, Hon Hai/Foxconn and Quanta, alongside anonymized Companies B, C and D, Marian and LEADER TECH. Forbes also flags Foxconn among the largest. In automotive, the company sells directly into VW, SAIC and Hyundai-linked programs and has entered Li Auto’s direct supply system. Top-5 concentration rose from 43.6% (FY23) to 48.2% (FY24) to 66.7% (FY25); overseas share moved from 42.9% (FY24) to ~66.0% (FY25).
IPO use of proceeds (RMB 1.22B planned). Production base RMB 340M (28%); R&D center 230M (19%); sales network and HQ 100M (8%); working capital 250M (20%); “development and technology reserve” 300M (25%, earmarked for value-chain M&A and equity investment). Working capital plus reserve is 45% of the raise, which drew scrutiny during the listing review.
The company was 100% founder-owned until 2021, and outside capital only arrived from 2022. Three structural features stand out: (1) a state-backed and strategic-corporate cap table (SDIC-linked, Shenzhen state VCs, Huawei’s Hubble); (2) an OFS-style liquidity event for the founder ahead of listing; and (3) IPO strategic placements that overlap with the customer and supply chain, a form of customer-investor circularity.
Incorporated May 2003; the two-founder split persisted for roughly 18 years. In October 2021 the company converted to a joint-stock company, set up employee holding vehicles and admitted Ruoxi Investment as its first outside shareholder.
Hubble subscribed for 10% (later diluted to 8.9%). In the same year the company entered the direct supplier system of anonymized customer “Company B”, which was the #1 customer in FY23 and FY24, #3 in FY25, and is disclosed as a related party. Press infers a Huawei link; the company has not confirmed it. Hubble sold 4.79% in November 2025 (to 4.11%, about 3.1% post-IPO); falling below 5% ends related-party status 12 months after the transfer.
An SDIC-linked fund became the largest institutional holder (10.11% pre-IPO), at a valuation ~23% above Hubble’s post-money seven months earlier. The lower per-share price versus May 2022 likely reflects a capital-reserve conversion (a split-like adjustment), so per-share prices across rounds are not directly comparable. Shenzhen High-Tech Investment (深高投)-linked vehicles (Jinyuan, Yuanxing) also entered around this time.
Dated June 2025 by one outlet; see the Data Integrity Notice. Do not rely on this datapoint until checked against the prospectus.
Zhao Jianping sold ~2.70M shares (about RMB 115M) to Qingsong Investment, Weike Holding, Innovation Capital and the Shenzhen Capital Group social-security fund. Ruoxi sold 140.5K shares (~RMB 6M). “Enterprise A”, identified here as Hubble, sold 2.6916M shares (~RMB 115M) to Yuanzhi Xinghuo, a Shenzhen state-backed vehicle with a record of co-investing alongside Hubble; Yuanzhi’s investment head, Fan Chun, joined the board in November 2025. From this print to the debut-day snapshot (~RMB 44.65B at RMB 596, about 10–11 months later) the implied equity value rose ~18.6x (our calculation).
18.7306M shares sold (25% of the 74.9224M post-issue share count), ~RMB 220M above the planned raise. Sponsor: Huayuan Securities; auditor: Lixin CPA; counsel: Guangdong Huashang. Strategic placees include Alibaba Cloud, Tongfu Microelectronics and Eoptolink plus a Shenzhen state VC (Eoptolink is an optical-module maker adjacent to HFC’s end-market). The stock opened at RMB 600 (+680.6%), touched RMB 630.01 (+719.6%) intraday, and was trading near RMB 596 (~RMB 44.65B market cap) later in the session; it was the second-highest-priced ChiNext offering of the year. The founders’ pre-IPO shares are locked until September 29, 2029 (36 months).
The moat rests on (1) product scarcity in high-performance TIM, (2) qualification inside AI-chip supply chains, (3) domestic-substitution tailwinds with a price-and-service edge, and (4) a state and strategic-capital network. Because (1) and (2) both stem from concentration in few customers and few products, the conservative framing is a first-mover qualification advantage rather than a structural, time-tested moat.
Management positions HFC among very few domestic firms producing graphene thermal pads at scale; the two lines were ~63% of FY25 revenue (35.8% + 27.2%). Thermal-segment gross margin rose from 49.8% (FY23) to 72.9% (FY25), and blended margin is ~1.9x the peer average (~34.8%). Materials are specified into the customer’s package design, so once adopted there is a design-in switching cost.
Over 60% of FY25 revenue came from AI-chip customers, direct or indirect, and press reports a locked position on the next-generation platform. Overlap between placement investors (Alibaba Cloud, Eoptolink, Tongfu) and customers (Foxconn, Wistron, Quanta) sets up a land-and-expand motion. The caveat: much of the qualification value accrues to anonymized customers B, C and D and a handful of AI-chip vendors, so external verification is limited.
Per the company’s regulatory reply, international majors hold the high end while local players (Feirongda, Zhongshi, Suzhou Tianmai and HFC) win on price and service. Forbes notes Chinese retail investors reliably bid up newly listed “tech self-reliance” names on debut. That policy and flow premium supports the multiple but is a market-structure factor, not a fundamental one, and should be underwritten separately.
SDIC’s fund (largest institutional holder), Shenzhen state VCs, Huawei’s Hubble and Alibaba Cloud appear on the register or in the placement. State and industrial capital were consistently on the buy side of secondaries, which supports funding credibility and customer access, but the same web feeds the related-party and governance questions in Section 05.
Re-rating triggers. Upside: (i) conversion of metal-carbon composites from GPU test volumes to production volumes; (ii) falling top-5 concentration or new AI-chip logos; (iii) quarterly revenue breaking above the ~RMB 220M run-rate from 4Q26. Downside: (a) 3Q26 printing negative YoY, as guidance implies; (b) HBM supply constraints delaying AI-chip shipments; (c) ASP erosion on existing models compressing gross margin. The current price reflects a binary valuation structure that already discounts much of the upside case.
The risk profile is the overlap of AI capex-cycle dependence, single-digit-customer concentration and an extreme post-listing valuation. Items below draw on the prospectus risk language, regulatory inquiry replies and press coverage. Some are questions raised by the media rather than findings by a regulator, and are labeled as such.
Top-5 share rose from 43.6% (FY23) to 66.7% (FY25), and AI-chip customers exceed 60% of revenue. The company itself flags that HBM shortages could throttle AI-chip shipments and that metal-carbon composites have too short a production history for a settled supply-chain position. One outlet argues the composite ramp reflects test orders; that is unverified.
Guidance implies flat-to-down 3Q26 on a YoY basis (Section 02). The prospectus lists in-cycle price declines on the same model, customer bargaining power and scale effects as risks. A 65–68% blended margin, roughly double peers, carries mean-reversion risk if product refresh slows.
The two founders control 67.86% of votes as concert parties; the CFO is a cousin of the chairman’s wife; Zhao’s son participates in the employee vehicle. Press has questioned the absence of a lock-up commitment from one relative and the consistency of related-party designation for certain minority holders. These are media-raised points; the IPO cleared review and registration. The RMB 300M “reserve” for M&A also carries a capitalization-execution gap.
Hubble’s entry coincided with entry into Company B’s supplier system, and B is a disclosed related party. The largest supplier, Chongqing Hongtai (#1 in FY22–24, #2 in FY25), was formed in May 2021, shares a registered address with a company subsidiary and is run by an industry insider, points the press has flagged. Management asserts independence; this is a live counterparty circularity / governance overhang item.
Receivables grew faster than sales (RMB 128M at end-FY24 to RMB 173M at June 2025), a “high profit, slow collection” pattern in critics’ framing. Leverage is low (liability ratio ~17%), yet 45% of planned proceeds goes to working capital and a technology reserve, and the actual raise exceeded plan, so capital-allocation discipline is the variable to watch.
With ~66% of sales overseas, CNY moves matter, and the prospectus cites customer supply-chain diversification and trade conditions as growth risks. With only 74.9M shares outstanding and a small initial float, volatility can be extreme; the schedule of placement and holder lock-up expiries is the supply variable.