Amico Valve Water Meter (Zhengyang Middle Road Branch)

Qingdao High Pressure Valve Co., Ltd.

Sheng'ao Hardware, Mechanical and Electrical Market (Xiucheng Road)

Qingdao Peiye Pipeline Technology Co., Ltd.

Aihua Water Heating Building Materials (Chengyang Shuangli Garden Branch)

Dunyun Valve (Chengyang Branch)