Oil & Gas
| Mon 01 Dec 2025
Beijing, Dec. 1 -- PetroChina has applied Chinese patent for Disassembly-free Cleaning Device for Water Cutting Visual Cup. Zhang Libo, Jin Yongcai, Yang Jiguang, Wu Yaozu, Yu Jingzhi, Jiao Zhanlong, Gou Han, Xu Erlun, Xu Zhongshu and An Xiaodong developed it.
The patent application number is CN202311399890 20231026. The patent..