Zhongcai Pipeline Antonio Ceramics (Huanzhen East Road Hardware and Building Materials Store)

Zhengtai Electrician (Shiwu'ao Industrial Zone 1st Road Shop)

Yuyao Chengzhou Tube Industry Co., Ltd. (No.1 Factory)

Aishangjia Tube Industry

Ningbo Hangyong Tube Industry Co., Ltd.

Hongjun Tube Industry