Supplier / Nikhom Phatthana, Rayong (Amata City Rayong) · TH
First Quality Circuit (Sihui Fuji Electronics)
First Quality Circuit Co., Ltd.
First Quality Circuit Co., Ltd. makes HDI and rigid PCBs up to 50 layers in Amata City Rayong, Rayong, Thailand. Part of Sihui Fuji Electronics Technology Co., Ltd. Surface finishes: ENIG, ENEPIG, HASL, OSP, immersion tin, electrolytic gold. Thai name: บริษัท เฟิร์ส ควอลิตี้ เซอร์คิท จำกัด.
PCB illustration · company photos not supplied
- Manufacturing site
- Amata City Rayong
- Board type
- HDI / rigid
- Profile ownership
- Not confirmed
- Research reviewed
- 2026-09-24
Know the company.
First Quality Circuit (Sihui Fuji Electronics) makes printed circuit boards at Amata City Rayong. The plant is in production. Part of Sihui Fushi Electronics Technology Co., Ltd. (JV with its Hong Kong Fushi subsidiary) (China).
Manufacturing site
End markets: AI servers · automotive · factory automation · industrial · medical · power · telecom
Who owns this plant
- Thai legal entity
- FIRST QUALITY CIRCUIT CO., LTD. · บริษัท เฟิร์ส ควอลิตี้ เซอร์คิท จำกัด
- Registration number
- 0105566047318 · registered 2023-03-02
- Registered capital
- THB 3,500,000,000
- Owned by
- Sihui Fuji Electronics Technology Co., Ltd. (四会富仕电子科技股份有限公司) 56.73%, 2026-08-04[3]; ELECBRIGHT SOLUTIONS PTE. LTD (Singapore, wholly owned by the parent) 42.7%, 2026-08-04[3]; 四会富仕电子（香港）有限公司 (Hong Kong subsidiary of the parent) 0.57%, 2026-08-04[3]
- Parent group
- Sihui Fuji Electronics Technology Co., Ltd. (四会富仕电子科技股份有限公司) · China · SZSE 300852 · revenue 1,931,730,249.88 CNY in 2025[6]
Published investment
- Board-approved ceiling for the new Thailand production base: 500,000,000 CNY, 2023-02-20[4]
- First capital increase via the Singapore subsidiary ELECBRIGHT: 200,000,000 CNY, 2025-03-14[5]
- Second capital increase via ELECBRIGHT (approved August 2025; registration completed August 2026): 350,000,000 CNY, 2025-08-28[8]
What the company has announced next
- In 2026 the parent plans to raise capacity utilisation at the Thai plant and enter supply chains of communications, power-supply and satellite customers.[7]
- The parent states it has laid out additional capacity in Thailand.[9]
- The Thai plant, in production since the second half of 2024, serves Southeast Asian, European and US customers with multilayer and HDI boards.[10]
Company facts from filings, the Thai company register, BOI releases and company announcements. Private individuals are not named.
- FIRST QUALITY CIRCUIT CO., LTD. (DBD data). Creden Data (2026)
- FIRST QUALITY CIRCUIT CO., LTD., registered capital. Creden Data (2026)
- 四会富仕：关于对泰国子公司增资及完成注册资本变更登记的公告 (2026-056). 四会富仕电子科技股份有限公司 (cninfo) (2026)
- 四会富仕：关于向泰国子公司增资的公告 (2025-064). 四会富仕电子科技股份有限公司 (cninfo) (2025)
- 四会富仕：关于向泰国子公司增资的公告 (2025-064, first increase). 四会富仕电子科技股份有限公司 (cninfo) (2025)
- 四会富仕电子科技股份有限公司2025年年度报告. 四会富仕电子科技股份有限公司 (cninfo) (2026)
- 四会富仕电子科技股份有限公司2025年年度报告 (2026 business plan). 四会富仕电子科技股份有限公司 (cninfo) (2026)
- 四会富仕：关于向泰国子公司增资的公告 (2025-064, second increase). 四会富仕电子科技股份有限公司 (cninfo) (2025)
- 四会富仕电子科技股份有限公司2025年年度报告 (capacity). 四会富仕电子科技股份有限公司 (cninfo) (2026)
- 四会富仕电子科技股份有限公司2025年年度报告 (capacity layout). 四会富仕电子科技股份有限公司 (cninfo) (2026)
- 四会富仕电子科技股份有限公司2025年年度报告 (company information). 四会富仕电子科技股份有限公司 (cninfo) (2026)
- 四会富仕电子科技股份有限公司2025年年度报告 (stock code). 四会富仕电子科技股份有限公司 (cninfo) (2026)
Tracker events for this plant
Sihui Fuji Electronics. Sihui Fuji told investors that the Thai phase-two building was expected to be finished at the end of November and that its first mSAP line is expected to start production in the second quarter of 2027. CNINFO, Shenzhen Stock Exchange filing, stock code 300852
Sihui Fuji Electronics. Sihui Fuji disclosed capital increases of RMB 200 million and RMB 350 million in its Thai subsidiary First Quality Circuit. CNINFO, Shenzhen Stock Exchange filing, stock code 300852
Sihui Fuji Electronics. Sihui Fuji reported the groundbreaking of phase two of First Quality Circuit in Thailand and said it looked forward to its mSAP line starting production at the end of 2026. Sina Finance (republished)
First Quality Circuit (Sihui Fuji). First Quality Circuit, Sihui Fuji's plant in Rayong, started formal production in the second half of 2024. CNINFO, Shenzhen Stock Exchange filing, stock code 300852
Find the technical fit.
Reported site status: operating (since Jun 2024): phase 2 towards 300,000 sqm/month
Construction
- Board types
- HDI · rigid
- Published for this plant
- Maximum layers
- Up to 50
- Published for this plant
- HDI (microvias)
- Yes
- Published for this plant
- Largest board or panel
- Ask the plant
- Not published: ask
- Board thickness range and tolerance
- Ask the plant
- Not published: ask
- Copper weight, outer and inner
- Ask the plant
- Not published: ask
Fine features
- Minimum line / space
- 35 µm (1.4 mil) · 0.035/0.035 mm inner and outer (listed in the 2026 column; 0.025/0.025 mm for 2027)
- Published for this plant
- Smallest finished hole
- 0.1 mm
- Published for this plant
- Aspect ratio (board thickness to hole)
- Ask the plant
- Not published: ask
- Minimum annular ring
- Ask the plant
- Not published: ask
- Impedance control and tolerance
- Ask the plant
- Not published: ask
Materials and finish
- Laminates
- FR-4 · high-Tg FR-4 · Rogers · low-loss
- Published for this plant
- Surface finishes
- ENIG · ENEPIG · HASL · OSP · immersion tin · electrolytic gold
- Published for this plant
- Solder mask and legend colours
- Ask the plant
- Not published: ask
Quality and certificates
- Certificates
- ISO 9001 · ISO 14001 · ISO 45001 · IATF 16949 · ISO 13485 · QC 080000 · ISO/IEC 27001 · UL · EN 9100 · ISO 14064
- Parent group only
- Electrical test (flying probe or fixture) and AOI
- Ask the plant
- Not published: ask
- IPC-6012 class built to
- Ask the plant
- Not published: ask
Orders
- Order sizes taken
- Prototypes · Volume
- Published for this plant
- Assembly at this site
- Ask the plant
- Not published: ask
- Lead time, prototype and production
- Ask the plant
- Not published: ask
Special processes on record: 50L+ multilayer with 80L (2026) / 100L (2027) roadmap; HDI 4+N+4 / 5+N+5 build-up and any-layer up to 12L; laser via 0.075 mm; heavy copper up to 15 oz; aspect ratio 25:1; Megtron 6/7/8 and Rogers high-speed materials; gold plating; all finishes in-house
Every plant gets the same rows. A value is shown only with its source: the company's own confirmation, research published for this Thai plant, or figures the parent group publishes for its other plants.
Trust you can inspect.
The same evidence standard applies to buyers and suppliers. A profile claim does not certify capability or payment reliability.
- Company identity
- Not confirmed
- Representative authority
- No contact person published yet
- Supporting evidence
- Research sources below
- Transaction history
- No transaction assurance is implied by this profile.