Pipe
| Tue 06 Oct 2026
Beijing, Oct. 6 -- Chinese Patent for Gas Pipeline Plugging Device has been issued to Henan Xintianji Pipe Technology. This invention was developed by Zhang Haijun, Zhang Weijia, Wang Guoying, Zhang Xinhua, Li Wenjin, Zhang Yanyan, Feng Shaopeng and Hu Yuanyuan.
The patent application number is CN202520583607U 20250331. The pat..