Rubber
| Fri 28 Aug 2026
Beijing, Aug. 28 -- State Intellectual Property Office of China has awarded a patent to Ningbo Hanke Polymer Mat Co Ltd for Rubber Plug of Pneumatic Injector. Ma Chengpu, Han Liyi, Yang Wensheng, Zhang Wengui, Pan Jirong, Han Fuyuan, Li Qingying, Li Lei and Xu Jun developed the invention.
The patent application number is CN20..