Chemicals
| Tue 04 Aug 2026
Beijing, Aug. 4 -- China Oilfield Services has filed a patent application for Alcohol-based Chelating Acid Liquid System as Well as Preparation Method, Use Method and Application Thereof. This invention was developed by Zhang Bo, Zhang Hongjing, Rong Xinming, Wu Guang, Chen Kai, Tong Zhineng, Wang Shun, Wang Ming, Cui Bo, Li Xia..