TANGGONG Valve Group maintains a comprehensive certification portfolio demonstrating compliance with international standards for industrial valve manufacturing. Our qualifications include API 6D and API 600 for steel valves, API 624 for low-emission valve stem sealing, CE marking for European market access, EAC for Eurasian Customs Union compliance, and ISO 15848-1 for fugitive emission control. Each certificate is issued by accredited third-party bodies and renewed periodically to ensure continuous conformity. Browse our qualification certificates below, or explore our patent certificates and honor certificates for more details