Kampani
Zogulitsa zathu zotentha ndi mapaipi achitsulo olunjika olumikizidwa, mapaipi opangidwa ndi galvanized, machubu ang'onoang'ono ndi ang'onoang'ono, ndi machubu ang'onoang'ono ndi ang'onoang'ono opangidwa ndi galvanized omwe amaperekedwa ndi Tianjin Youfa Steel Pipe Group Co., Ltd. Kampaniyi yavomerezedwa ndi ISO 9001, ISO 14001, ISO 45001, ndi ISO 50001 management systems.
Youfa Gourp-ISO9001
Youfa Gourp-ISO14001
Youfa Gourp-ISO50001
Youfa Gourp-ISO9001
Youfa Gourp-ISO45001
Youfa Gourp-ISO50001
Youfa Gourp-ISO14001
Youfa Gourp-ISO45001
Youfa Gourp-ISO50001
Chogulitsa
Satifiketi ya Api 5l ya Chitoliro cha Zitsulo Zozungulira
Zikalata za Fm Zopangira Chitoliro
Zikalata za Ul za Chitoliro Chothira Moto
Satifiketi ya API 5CT
Zikalata za Fm Zoyenera Chitoliro Cholumikizidwa
Ce En10219 Ya Chitoliro Chachitsulo Chachikulu
Satifiketi ya API 5L ya Chitoliro cha Mzere
Zikalata za EPD za Chitoliro Chopangidwa ndi Zitsulo
Ce En10219 Ya Chitoliro Chozungulira Chachitsulo
Satifiketi ya ABS
Satifiketi ya FPC
Satifiketi ya BV
Labu
Satifiketi ya CNAS ya Tangshan Lab
Satifiketi ya CNAS ya Tianjin