Essential China Semiconductor Fab and OSAT Partner Directory for Foreign Companies
For foreign semiconductor companies seeking manufacturing and packaging partners in China, identifying reliable foundry and OSAT (Outsourced Semiconductor Assembly and Test) partners is one of the most critical strategic decisions. China’s semiconductor manufacturing ecosystem has matured dramatically over the past decade, driven by government investment through the National Integrated Circuit Industry Investment Fund (the “Big Fund”) and the push for domestic self-sufficiency in chip production. Today, China hosts over 40 major wafer fabs, dozens of advanced packaging facilities, and a rapidly expanding base of specialty manufacturing partners. However, navigating this landscape requires careful due diligence — not every Chinese foundry or OSAT provider meets international quality standards, and geopolitical risks add layers of complexity to partner selection. This directory provides foreign companies with a structured overview of China’s leading semiconductor manufacturing and OSAT partners, their capabilities, and key considerations for engagement.
China’s Leading Wafer Foundries: Tier 1 Partners
China’s Tier 1 foundries offer process technologies ranging from mature nodes (180nm–28nm) to leading-edge processes (14nm–7nm). These are the partners most likely to meet international quality standards and are equipped to serve foreign fabless semiconductor companies.
| Foundry | Location(s) | Process Nodes | Monthly Capacity (200mm-Equivalent) | Key Specialties | Foreign Client Readiness |
|---|---|---|---|---|---|
| SMIC (Semiconductor Manufacturing International Corp.) | Shanghai, Beijing, Shenzhen, Tianjin | 180nm–14nm (N+1/N+2 under development) | ~700,000 wafers/month | Logic, mixed-signal, RF, eNVM, CIS, HV | High — English-language support, established foreign client base, IP protection protocols |
| Hua Hong Semiconductor (Hua Hong Grace / HHGrace) | Shanghai, Wuxi | 180nm–55nm (specialty) | ~400,000 wafers/month | eNVM, power management, IGBT, automotive-grade logic, BCD | High — long history of foreign clients, strong automotive qualification, English engineering support |
| Nexchip (Nexchip Semiconductor Corp.) | Hefei | 130nm–28nm | ~120,000 wafers/month (ramping) | Display driver ICs, CIS, TDDI, power management | Moderate — growing foreign engagement, Chinese-language primary but English shift support available |
| CanSemi Technology | Guangzhou | 180nm–40nm (specialty) | ~100,000 wafers/month (ramping) | Analog, power management, RF, MEMS | Low-Moderate — primarily focused on domestic clients but open to foreign partnerships |
SMIC remains the most important partner for foreign companies, offering the broadest process portfolio and strongest track record of serving international clients. However, foreign firms should note that SMIC has been on the US Entity List since December 2020, which restricts the export of certain US-origin equipment and software to the company. This means SMIC cannot produce chips requiring US-origin EDA tools at 10nm and below, and foreign clients must conduct careful export control due diligence before engaging SMIC for advanced-node production.
China’s Mature-Node and Specialty Foundries: Tier 2 Partners
Beyond the Tier 1 players, China has a rich ecosystem of mature-node and specialty foundries that serve specific market segments. These foundries are often more flexible on pricing and minimum order quantities, making them attractive for mid-volume production or niche applications.
- CR Micro (CR Microelectronics / Huada Jiutian) — Based in Beijing, focused on MEMS sensors, power discretes, and analog ICs at 0.18μm–0.5μm nodes. Well-positioned for IoT and industrial sensor applications. Foreign engagement is limited but growing through design service partnerships.
- Innoscience (Zhuhai) — Specializes in GaN (gallium nitride) power devices on 200mm wafers. One of China’s few pure-play GaN foundries with capability for 650V and 1200V power devices. Attractive for foreign power semiconductor companies exploring GaN adoption.
- Shanghai Advanced Research Institute (SARI) / Shanghai IC R&D Center — Research-focused foundry with capabilities in FD-SOI, RF-SOI, and emerging memory technologies. More suitable for prototyping and low-volume production than high-volume manufacturing.
- Wuhan Xinxin Semiconductor (XMC) — A subsidiary of YMTC, XMC offers specialty memory and logic foundry services at mature nodes. Its primary focus is internal 3D NAND production at YMTC, but strategic logic foundry partnerships are available.
- Shanghai Huali Microelectronics (HLMC) — Focused on 40nm–28nm logic and mixed-signal processes, HLMC serves both Chinese and select international clients. Its 28nm HKMG process has gained traction for applications processors and baseband ICs.
China’s Leading OSAT Providers
China’s OSAT sector has grown rapidly, with several players now competing directly with global leaders like ASE, Amkor, and JCET. The country’s OSAT revenue exceeded USD 35 billion in 2025, representing approximately 30% of the global OSAT market. Foreign companies will find that China’s top OSAT providers offer competitive pricing (typically 15–30% below Taiwan-based alternatives) while maintaining quality standards that meet international certification requirements.
| OSAT Provider | Location(s) | Packaging Technologies | Key Industries Served | Foreign Client Readiness |
|---|---|---|---|---|
| JCET Group (Jiangsu Changjiang Electronics Technology) | Jiangyin, Shanghai, Tongfu Micro (subsidiary) | FC-BGA, FC-CSP, SiP, WLP, 3D packaging, FOWLP, TSV | Communications, automotive, computing, industrial | High — global operations, ISO/TS 16949 qualified, English engineering team, 15+ international production bases |
| TongFu Microelectronics (TFME) | Nantong, Suzhou | FC-BGA, FC-CSP, SiP, QFN/DFN, BGA, WLCSP | Consumer electronics, memory, automotive, networking | High — well-established foreign client base, certified for major US and EU chip companies |
| Huatian Technology (Kaihua) | Gansu (Tianshui), Xi’an, Kunshan | QFP, QFN, SOP, BGA, SiP, FC-CSP | Automotive, industrial, consumer, medical | Moderate-High — growing foreign engagement, competitive on mature package pricing |
| Unisem (acquired by JCET, operates independently) | Chengdu, Shanghai, Malaysia (Ipoh) | QFN, DFN, SOP, SOIC, TSSOP, FC-CSP, SiP | Analog, mixed-signal, power, MEMS, sensors | High — ISO 26262 (automotive functional safety), major Western analog semiconductor clients |
| Powertech Technology Inc. (PTI) — Chengdu subsidiary | Chengdu | Memory packaging, FC-BGA, FC-CSP, SiP | Memory (DRAM, NAND, NOR), logic, RF | Moderate — primarily serves memory clients but expanding logic packaging for foreign firms |
Advanced Packaging Capabilities in China
For foreign companies requiring advanced packaging — fan-out wafer-level packaging (FOWLP), 2.5D/3D packaging with through-silicon vias (TSV), or system-in-package (SiP) — China’s OSAT providers have invested heavily in these technologies over the past three years, driven by demand from AI accelerators, 5G infrastructure, and high-performance computing.
JCET’s advanced packaging portfolio is the most comprehensive, with FOWLP capability (via its Danmark subsidiary acquired from ADT), copper hybrid bonding development, and 3D stacking technologies comparable to international leaders. TongFu offers competitive SiP solutions for RF front-end modules and application processors. Huatian is developing its advanced packaging line with support from the local government in Tianshui, though its capabilities currently lag behind JCET and TongFu by approximately one generation.
Foreign firms should note that advanced packaging services in China come with certain technology transfer requirements. The Chinese government often conditions approval for advanced packaging investments on commitments to develop domestic capabilities, including sharing certain process technologies or training local engineers. This is less restrictive than in wafer fabrication but still requires careful contractual structuring.
Materials and Equipment Supply Chain Partners
A complete manufacturing partner strategy also requires understanding China’s semiconductor materials and equipment ecosystem. The country has made significant progress in developing domestic supply chains for certain categories:
- Silicon wafers — Zingsemiconductor (Zing Semiconductor), National Silicon Industry Group (NSIG), and GRITEK produce 200mm and 300mm epitaxial and polished wafers. Zingsemiconductor has achieved qualification at multiple international foundries and is the most advanced Chinese wafer supplier for foreign clients.
- Photomasks — The Photomask Business Unit of Shanghai IC R&D Center and SMIC’s internal mask shop provide mask-making services. Independent photomask provider Compal (via its China subsidiary) offers advanced reticle manufacturing suitable for 28nm and above.
- Specialty chemicals and gases — Companies including Do-Fluoride (electronic-grade HF), Linggas (high-purity specialty gases), and Shanghai Huayi Fine Chemical supply materials used in Chinese foundries. Foreign firms should verify material certifications against their own qualification standards.
- Test and assembly equipment — Domestic test equipment providers like Changchuan Technology (testing), ASM Pacific Technology (through its Shenzhen operations), and Advanced Micro-Fabrication Equipment Inc. (AMEC) offer etch and deposition tools. Equipment qualification cycles for foreign clients typically range from 6 to 18 months.
Due Diligence Checklist for Partner Selection
Before engaging any Chinese foundry or OSAT partner, foreign companies should complete the following due diligence steps:
- Export control screening — Verify whether the partner is on the US Entity List, Unverified List, or any sanctions list. Review BIS (Bureau of Industry and Security) regulations for the specific process nodes and end-uses you plan to manufacture. Document your supply chain compliance program.
- IP protection assessment — Evaluate the partner’s IP protection track record. Request case studies of how they handled foreign client IP. Verify their facility security protocols: are design files encrypted in transit and at rest? Is there physical separation between client production lines? Do they conduct regular IP audits?
- Quality certification verification — Request current certifications: IATF 16949 (automotive), ISO 9001 (quality), ISO 14001 (environmental), ISO 26262 (functional safety), and any industry-specific certifications relevant to your product.
- Capacity and lead time verification — Request a capacity allocation letter or memorandum of understanding that specifies dedicated capacity, lead times, and allocation priorities. Verify against SEMI’s World Fab Forecast data for the specific fab.
- Financial stability review — Request audited financial statements for the past three fiscal years. For private companies that do not publicly disclose financials, request bank references and customer references from at least three existing international clients.
- Geopolitical contingency planning — Develop a contingency plan for worst-case scenarios: what happens if trade restrictions escalate, if the partner is added to a sanctions list, or if supply chain disruptions affect material availability. Consider a dual-sourcing strategy with partners in different regions.
Where to Go From Here
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- Ready to act? Read [guide: SLUG-TO-BE-FILLED]
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Essential China Semiconductor Fab and OSAT Partner Directory for Foreign Companies — first published on China Gateway 360. Last updated: July 2026.
