Tools and Machinery
| Mon 01 Jun 2026
Beijing, June 1 -- Xinjiang Petroleum Administration Bureau Co Ltd and China National Petroleum have sought patent for Buckle Making Tool for Fishing Oil Pipe. This invention was developed by Guo Qin, Li Shengyong, Wang Kelin, Chen Yuanxiang, Gu Shichao, Zhang Jingfeng, Guo Xinwei, Sun Changyou, Zhao Zewang, Kumashiro Ryo and Zh..