Sports
| Tue 18 Nov 2025
Beijing, Nov. 18 -- Zhejiang Petrochemical Valve has filed a patent application for Top-mounted Ball Valve. This invention was developed by Xiao Donghai, Zhu Lili, Wang Zhongmiao, Luo Jiankang, Chen Lei, Mu Suhao, Duan Mengyu, Shao Wenwen, Li Yuan and Li Zhihua.
The patent application number is CN202510300831 20250314. The pate..