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![CERTIFICATE OF CONFORMITY OF QUALITY MANAGEMENT SYSTEM CERTIFICATION](https://img.waimaoniu.net/3397/3397-202304190933008216.jpg?x-oss-process=image/resize,m_lfit,w_400,h_300)
CERTIFICATE OF CONFORMITY OF QUALITY MANAGEMENT SYSTEM CERTIFICATION
![CERTIFICATE OF CONFORMITY OF GJB QUALITY MANAGEMENT SYSTEM CERTIFICATION](https://img.waimaoniu.net/3397/3397-202304190933266553.jpg?x-oss-process=image/resize,m_lfit,w_400,h_300)
CERTIFICATE OF CONFORMITY OF GJB QUALITY MANAGEMENT SYSTEM CERTIFICATION
![ISO/TS 16949 :2009](https://img.waimaoniu.net/3397/3397-202304181436095193.jpg?x-oss-process=image/resize,m_lfit,w_400,h_300)
ISO/TS 16949 :2009
![IATF 16949 Certification](https://img.waimaoniu.net/3397/3397-202302070903367319.png?x-oss-process=image/resize,m_lfit,w_400,h_300)
IATF 16949 Certification
![GJB9001C-2017](https://img.waimaoniu.net/3397/3397-202302070907320105.png?x-oss-process=image/resize,m_lfit,w_400,h_300)
GJB9001C-2017
![Utility model patent certificate](https://img.waimaoniu.net/3397/3397-202302070908199352.png?x-oss-process=image/resize,m_lfit,w_400,h_300)
Utility model patent certificate
![Patent certificate - an automatic control vertical straightening unit](https://img.waimaoniu.net/3397/3397-202303291653176603.png?x-oss-process=image/resize,m_lfit,w_400,h_300)
Patent certificate - an automatic control vertical straightening unit
![Patent certificate - an automatic grinding device for silver bright bar](https://img.waimaoniu.net/3397/3397-202303291646510269.png?x-oss-process=image/resize,m_lfit,w_400,h_300)
Patent certificate - an automatic grinding device for silver bright bar
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