Tangshan Mingwan International Trade Co., Ltd.

Henan Shuangzhong Intelligent Technology Co., Ltd.

Quanzhou Sanxing Fire-Fighting Equipment Co., Ltd.

Henan Changhong Mechanical & Electrical Equipment Co., Ltd.

Guizhou Baishunxing Pipe Industry Co., Ltd.

Zhuji Zhengxin Pipe Industry Co., Ltd.