Warshadda Tuubooyinka Birta ah
Tangshan Zhengyuan Pipeline Industry Co., Ltd.
Tangshan Youfa Steel Tube Manufacture Co., Ltd.
Tangshan Youfa New Building Equipment Co., Ltd
Awoodda Wax-soo-saarka
39 Khadadka Wax Soo Saarka Tuubooyinka Wareega ah ee Erw
24 Khadad Wax Soo Saar Tuubo Wareegsan oo Erw ah oo Galvanized ah
4 Khadadka Wax Soo Saarka ee Birta ah ee Balaastikada ah
9 Khadadka Wax Soo Saarka ee Heerka/Kaydka/Xirmooyinka geesoodka ah ee Ringlock