Laozhu Construction Hardware Machinery Daquan (Hejianzi Juncheng Branch)

Kaijia Hardware & Electrical Material Business Department (Yujingtian Xiadian)

Fengzhong Electric Tools (No.1 Middle School Jiayuan Branch)

Shandong Chuankang Tube Industry

Jidong Building Materials

Shandong Quanyi Building Materials Co., Ltd.