Sports
| Mon 30 Mar 2026
Beijing, March 30 -- State Intellectual Property Office of China has received Hefei Normal University patent application for Tennis Training Device. Zhang Xuehui, Xi Li, Li Jilin, Yang Rongyi, Ren Yuanbo, Xu Jichao, She Ao, Pan Zhihui, Chen Junran and Wang Pengyu developed the invention.
The patent application number is CN202..