Petrochemicals
| Tue 27 Oct 2026
Beijing, Oct. 26 -- China Petroleum & Chemical and SINOPEC Southwest Oil & Gas have secured a patent on Flange Guiding Device for Installing Under-pressure Operation Equipment. Zeng Xiaojian, Pu Yang, Lin Xiaoli, Yang Dade, Zhi Lin and Chen Yingchang developed the invention.
The patent application number is CN202520672922U 20..