Masana'antar Bututun Karfe
Kamfanin Masana'antar Bututun Zhengyuan na Tangshan
Kamfanin Tangshan Youfa Steel Bututun Manufacturer Co., Ltd.
Kamfanin Kayan Aikin Gine-gine na Tangshan Youfa, Ltd.
Ƙarfin Samarwa
Layukan Samar da Bututun Zagaye 39 na Erw
Layukan Samar da Bututun Zagaye 24 na Galvanized Erw
Layukan Samar da Rukunin Roba guda 4 na Karfe
Layukan Samar da ma'aunin Ringlock Scaffolding 9/littafin bayanai/ƙafafun diagonal