Quality Control
- SUNZO has it’s own researching and development team and test center, has participate in rule-making of the latest national industry standards and the international ISO standards for disc springs.
- SUNZO has passed certificate including: ISO 9001,IATF 16949,ISO14001,ISO45001, and has got more than 40 patent of inventions.
- Owns core competitiveness, has a full set of industrial chain from key materials to key equipment and produce quality products.
- SUNZO has a beautiful working environment and full set of production equipment, has an area of 60 mu, own several production lines researched independently.
Our Certificates
CE
- Certificate Number:No. DPWD/2474/02/KE/26
- Issue Date:2026-04-02
- Expiry Date:2031-04-01
- Scope:his verification was carried out on a voluntary, based on the above-mentioned product document. The verification activities were carried out in accordance with the ICG internal procedure (DPWD). The manufacturer is fully responsible for the compliance of t
- Issued By:Intercert Global Sp. z o.o.
IATF16949
- Certificate Number:108542/A/0001/SM/ZH
- Issue Date:2020-01-11
- Expiry Date:2028-12-07
- Scope:Manufacture of Disc Spring and Wave Spring(Excludes Product Design under Clause 8.3)
- Issued By:United Registrar of Systems (Holdings) Ltd
ISO 9001
- Certificate Number:HBC2500122QR0M
- Issue Date:2026-01-26
- Expiry Date:2028-01-23
- Scope: Production and sales of disc springs, wave springs, irregular springscompression springs, and stamped parts
- Issued By:Shanghai Huibo Certification Co.,Ltd.
45001
- Certificate Number:059026S00014R110
- Issue Date:2026-01-26
- Expiry Date:2029-02-07
- Scope:Production and sales of disc springs, wave springs, irregular springs,Production and sales of disc springs, wave springs, irregular springs,S
- Issued By:Shanghai Huibo Certification Co.,Ltd
14001
- Certificate Number:059026E00019R110
- Issue Date:2026-01-26
- Expiry Date:2029-02-07
- Scope: Production and sales of disc springs, wave springs, irregular springs,compression springs, stamped parts, and related management activities
- Issued By:Shanghai Huibo Certification Co.,Ltd.
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