Paper and Pulp
| Sat 03 Oct 2026
Beijing, Oct. 3 -- State Intellectual Property Office of China has awarded a patent to Zhengzhou Yunda Paper Equipment for Self-cleaning Spraying Device of Drum Screen and Drum Screen. Xu Yinchuan, Zhang Gaowei, He Dongge, Cheng Helin, Ma Yuhao, Yang Xiaojin, Zhou Guangchao, Qian Zhengyang and Guo Pengtao developed the invention..