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China_s top 500 manufacturing industries
China's top 500 manufacturing industries
ISO 9001
ISO 9001
ISO 14001
ISO 14001
ISO 45001
ISO 45001
The two integration management system evaluation certifica
The two integration management system evaluation certifica

Business License

API 5CT -0755
API 5CT -0755
API 5CT -0802
API 5CT -0802
API 5L-0552
API 5L-0552
EN 10217 Directive 2014 68 EU
EN 10217 Directive 2014 68 EU
EN 10217 material according to DGRL 97 23 EC
EN 10217 material according to DGRL 97 23 EC
JIS G3444
JIS G3444
JIS G3452
JIS G3452
LR 1
LR 1
LR 2
LR 2
Quality-Assurance
Quality-Assurance
Quality-Management-System
Quality-Management-System
SONCAP
SONCAP
UL ASTM A852
UL ASTM A852

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