Who are the petrochemical contractors in China?

List of permitted enterprises of China petroleum contractors: list of short-listed enterprises for civil construction of China Petroleum High Pressure Valve Co., Ltd.;

Henan Kaifeng High Pressure Valve Co., Ltd.;

Shanghai Kaike Valve Manufacturing Co., Ltd.;

Wenzhou Yu Ting Group Co., Ltd.;

Bethel valve group co., ltd

Zhejiang kairuite valve industry co., ltd

Shanghai kaiweixi valve co., ltd

Anhui Tunxi high pressure valve co., ltd.

Suzhou niuwei valve co., ltd

Kaishime valve co., ltd