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

Yuyao Chezhiku Car Utensils Co., Ltd.

Chaoda Hardware Pipeline (Huangjian Shan Business Department)

Ningbo Hangyong Tube Industry Co., Ltd.

Ningbo Kexing Tube Industry Development Limited Company

Fangchuang Tube Industry Co., Ltd.