Izitifiketi ezihlobene zeZhangjiagang Free Trade Zone Henglong Steel Pipe Co., Ltd

Isitifiketi Sokuphathwa Kwezokuhlinzeka Okuluhlaza

Umnyango wokufaka ukupakisha okukhanyayo

Imvume yokusebenzisa uphawu lwe-API lwe-American Petroleum Institute

Isitifiketi seMvume yokusebenzisa iMonogram ye-API esemthethweni

ISO14001

ISO14001

Ubufakazi bokuphathwa kokupakisha obuhlaza

Umgwaqo wokupakisha oluhlaza

Isitifiketi Sokwamukelwa KweLab ISO17025

Isitifiketi Sokwamukelwa KweLab ISO17025

ISO9001

ISO9001

Isitifiketi soHlelo Lokuphathwa Kwekhwalithi Yomkhiqizi Wezinto Zokucindezela

Isitifiketi soHlelo Lokuphathwa Kwekhwalithi Yomkhiqizi Wezinto Zokucindezela

Ilayisense Yokukhiqiza Izinsiza Ezikhethekile

Ilayisense Yokukhiqiza Izinsiza Ezikhethekile