Tools and Machinery
| Wed 07 Oct 2026
Beijing, Oct. 7 -- Chengdu Dayou Oil Drilling Engineering and Sichuan Yuesheng Energy Group have been awarded a patent for Dismounting Device for Wear-resistant Disc of Drilling Pump. This invention was developed by Wang Jia, Xiao Jingchao, Feng Guangqiang, Wang Jian, Zhang Yaping, Song Guangming, Chen Tao, Chen Ruoxi, Su Wei, L..