Security & Protection
| Wed 02 Sep 2026
Beijing, Sept. 2 -- Lianggu Valve Group has submitted a patent application for Pilot Operated Safety Valve. Cao Zheng, Zhang Junbo, Li Duofeng, Ye Shengjie, Pan Junxiang, Pan Yuanbo, Xie Fei and Wang Congcong developed the invention.
The patent application number is CN202610307426 20260313. The patent publication number is CN12..