Qingdao Chengdeyuan Trading Co., Ltd.

Qingdao Jinhuihuang Materials Co., Ltd.

Risheng Hardware Mechanical And Electrical (Huizhou Road Shop)

Qingdao Jinhuahai Hardware Mechanical And Electrical Co., Ltd. (Huizhou Road)

Jiaozhou Tongda Hardware (Huijin Unit South Area Branch)

Qingdao Ruida Standard Element Co., Ltd.