Rubber
| Wed 06 May 2026
Beijing, May 6 -- Henan Riyue Engineering Man Co Ltd has filed a patent application for Water Filling and Draining Facility for Rubber Dam. This invention was developed by Shen Na, Zhang Huaizhan, Wu Min, Ding Qisen, Liu Qian, Wang Congfeng, Feng Kexiang, Wei Haiying, Wang Jie and Wu Yue.
The patent application number is CN20..