ʻOihana
ʻO kā mākou huahana kūʻai wela he mau paipu kila humuhumu pololei i hoʻopaʻa ʻia, nā paipu galvanized, nā paipu huinahā a me nā ʻāpana huinahā, a me nā paipu huinahā a me nā ʻāpana huinahā i hoʻolako ʻia e Tianjin Youfa Steel Pipe Group Co., Ltd. Ua hōʻoia ʻia kēia hui ma lalo o nā ʻōnaehana hoʻokele ISO 9001, ISO 14001, ISO 45001, a me ISO 50001.
ʻO Youfa Gourp-ISO9001
ʻO Youfa Gourp-ISO14001
ʻO Youfa Gourp-ISO50001
ʻO Youfa Gourp-ISO9001
ʻO Youfa Gourp-ISO45001
ʻO Youfa Gourp-ISO50001
ʻO Youfa Gourp-ISO14001
ʻO Youfa Gourp-ISO45001
ʻO Youfa Gourp-ISO50001
Huahana
Palapala Hōʻoia Api 5l no ka Paipu Kila ʻŌwili
Nā Palapala Hōʻoia Fm No ke Kūpono ʻana o ka Paipu
Nā Palapala Ul No ka Paipu Sprinkler Ahi
Palapala Hōʻoia API 5CT
Nā Palapala Hōʻoia Fm No ke Kūpono Paipu Grooved
ʻO Ce En10219 No ka paipu kila huinaha
Palapala Hōʻoia API 5L No ka Paipu Laina
Nā Palapala Hōʻoia EPD no ka Paipu Kila Welded
ʻO Ce En10219 No ka paipu kila poepoe
Palapala hōʻoia ABS
Palapala Hōʻoia FPC
PALAPALA HŌʻIKE BV
Keʻena Hoʻokolohua
Palapala hōʻoia CNAS no ka Tangshan Lab
Palapala hōʻoia CNAS no Tianjin