Shanghai Huasuan Wufengguan

Xunye Duxin Fang Guanyuanguan (Shanghai Xinnong Steel Material Market Shop)

Shanghai Gangzhu Industry Gong Corner Caogang Middle Houban Yuanganghan Guanfangguan Duxin Guan Wufengguan Luowen Gangpifa

Shanghai Zerong Steel Tube Co., Ltd.

Shanghai Caiyi Industry Company Ltd.

(Lairu Building Materials) Zhongcai Pipeline Jinshan General Agent