2. Xinjiang Guanghui Industrial Co., Ltd..
Three. Xin' ao gas holding co., ltd
4. Changchun Gas Co., Ltd.
Verb (abbreviation of verb) China Petroleum Jieneng Group Co., Ltd.
6. Henan Zhongyuan Green Energy High-tech Co., Ltd..
7. Huayou Natural Gas Co., Ltd
8. Anhui Natural Gas Development Co., Ltd.
Chongqing Kaiyuan Oil and Gas Co., Ltd.
Dagang oilfield natural gas company
Xi。 Hainan CNPC Shennan Petroleum Technology Development Co., Ltd.
CNG Compressor Enterprise I. Sichuan Jinxing Compressor Manufacturing Co., Ltd.
Second, Chongqing Gas Compressor Factory Co., Ltd.
3. Enrique (Bengbu) Compressor Co., Ltd.
Four. Zigong Tongda Machinery Manufacturing Co., Ltd.
5. Wuxi Compressor Co., Ltd.
Six, Sichuan South Gas Compressor Company
Zigong dongfang general compressor co., ltd.
Zigong shanchuan gas compressor co., ltd.
9. Sichuan Dachuan Compressor Co., Ltd..
X. No.3 Machinery Factory of Jianghan Petroleum Administration Bureau of China Petrochemical Company
Xi。 Amda Compressor (Shanghai) Co., Ltd.
12. Shanghai commscope adalon high-voltage equipment co., ltd.