Hebei Dayufeiteng Wear-Resisting Pipeline Fittings Co., Ltd.

Dongying Wanhe Rubber & Plastic Co., Ltd.

Qingdao Taichanglong Rubber Technology Co., Ltd.

Hebei Hongjiang Rubber&plastic Technology Co., Ltd.

Qingdao Xiyuan Plastic & Rubber Co., Ltd.

Liaocheng Yiheng Machinery Co., Ltd.