Suzhou TEST Technical Service Co. ltd.

Changshu Fengfan Power Equipment Co., Ltd.

HEBEI KAIRUI PIPE FITTINGS CORPORATION.

Beijing Valve General Factory Co. Ltd.

Baoji Taicheng Clad Metal Materials Co., Ltd.

Datong Reciprocity Group Co., Ltd.

Funing County Petroleum Machinery Co.,Ltd.

Zhengzhou Yuguang Clad Metal Materials CO.LTD

Hangzhou Hantai Trading Co., Ltd.

Botou Jiuyun Environmental Protection Machinery Co., Ltd.