Dongguan Zhansheng Metal Material Co., Ltd.

Dongguan Zeus Metal Material Co., Ltd.

Dongguan Meilan Metal Material Co., Ltd.

Nancheng Poly Pipeline Headquarters Dongguan Youyuan Building Materials Gongyinglian Co., Ltd.

Dongguan Boxin Steel Material Co., Ltd.

Dongguan Yaxin Insulation Material Co., Ltd.