1. Anhui Wanwei High-tech Material Co. Wuxi Dongsheng Petrochemical Equipment Co.
6. Xinjiang Tuha Oilfield Construction Co.
7. Urumqi Xinfeng Shengjie Industry & Trade Co.
8. Xi'an Vehicle Factory of China North Vehicle Group
9. China Petroleum & Natural Gas Sixth Construction Company
10. Handan Oxygen Generator Factory
11. Yunnan Zhanhua Limited Company
12. Nantong Dali Chemical Equipment Co. 13. Wuhu Jinding Boiler Co.
14. Nanjing Aerospace Chenguang Co.
15. Yangzhou Zhengyu Boiler Co.
16. Shanghai Ronghua High-Pressure Vessel Co. Shanghai Ronghua High Pressure Vessel Co.
17. Nanjing Smeco Special Metal Equipment Co.
18. Weifang Shengjian Boiler and Pressure Vessel Factory
19. Fujian Sanming Shuanglun Chemical Machinery Co.
20. Shanghai Lumbin Petrochemical Equipment Co.
21. Chengdu Ruiqi Petrochemical Engineering Co.
22. Dongfang Steam Turbine Co. 22. Dongfang Steam Turbine Factory
23. Chengdu Hongda Machinery Co. 24. Tianjin Rongtong Mechanical Equipment Manufacturing Co.
25. Xinjiang Petroleum Engineering and Construction Co. Pressure Vessel Factory
26. Wuchang Shipbuilding Factory
27. Zhonghao Chenguang Chemical Industry Research Institute No.4 Factory
28. Hubei Xinxin Pressure Vessel Manufacturing Co.
29. Yueyang Lianzhong Head Co.
30. Shanghai Pudong Xinhua Chemical Machinery Factory
31. Yangzhou Chengyulu Environmental Engineering Co.
32. Yangzhou Mingxin Pressure Vessel Co.
33. China Yimetallurgy Industrial Construction and Installation Engineering Co. Ltd.
34. Zhangjiagang Jiangnan Boiler and Pressure Vessel Co.
35. Zhangjiagang Furui Boiler and Vessel Manufacturing Co.
36. Shenyang Industrial Installation Group Co.
37. Sichuan Yibin Jiangyuan Chemical Machinery Manufacturing Co.
38. Xinjiang Kelamayi Antei Refining and Chemical Engineering Co. Ltd.
39. Suzhou Jinxiang Pressure Vessel Manufacturing Co.
40. Yunnan Chemical Machinery Factory
41. Xinxiang Petrochemical Head Factory of Henan Province
42. Shenyang Sanyang Metallic Structure Installation Co.
43. Tieling Zhongyue Mechanical Equipment Manufacturing Co.
44. Dezhou Dehua Equipment Engineering Co. Ltd.
45. PetroChina Liaoyang Petrochemical Fiber Company Machinery Factory
46. Shenyang Dongfang Titanium Industry Co.
47. Shaanxi Yanta Head Factory
48. Nantong CIMC Tank Storage & Transportation Equipment Manufacturing Co.
49. Zigong Tianli Pressure Vessel Manufacturing Co. Zigong Dongrong Pressure Vessel Co.
51. Chengdu Shuangliu Zhengwu Head Factory
77. Chengdu Chengdu Chenghua District Zhengwu Large Head Factory, Chongqing Branch
52. Sichuan Jianyang Chuankong General Machinery Co.
53. Sichuan Air Separation Equipment (Group) Co.
54. Sichuan Deyang Dongqi Meter Engineering Co. Ltd.
55. Zigong Honghe Chemical Industry Co., Ltd.
56. Wuxi Qianzhou Xilan Forging & Pressing Co.
57. Wuxi Huaguang Boiler Co.
58. Yingkou Qingying Petrochemical Equipment General Factory
59. Wuxi Heng'an Pressure Vessel Manufacturing Co.
60. Yangzhou Tianhao Pressure Vessel Co.
61. China Chemical Engineering Sixth Construction Company, Beijing Branch
62. Yixing Beihai Head Co.
63. Sichuan Zhuge Boiler Co.
64. Sinopec Group Nanjing Chemical Industry Co. Ltd.
66. Qingdao Ocean Thermoelectric Chemical Equipment Co.
67. Tai'an Hongda Metal Structure Manufacturing Co.
68. Chengdu Guotai Petrochemical Equipment Manufacturing Factory
69. Jiangsu Tianyu Group Pressure Vessel Co.
70. China National Petroleum Corporation Fushun Engineering Construction Co.