Enviornmental
| Thu 26 Mar 2026
Beijing, March 27 -- Beijing Drainage Equipment has sought patent for Chain Compensation Method and Device for Non-metal Chain Type Mud Scraper. This invention was developed by Ying Meijuan, Li Yan, Mu Xiaodong, Meng Qingyu, Cheng Qing, Gao Baohua, Wang Zhifeng, Zhang Heng, Li Xiaohui, Zhang Jiajun, Guo Yong, Li Shuke, Zhu Jundo..