Sports
| Wed 25 Mar 2026
Beijing, March 25 -- Shandong Sending And Transf Engineering Co Ltd has sought patent for Aviation Warning Ball Convenient to Install. This invention was developed by Duan Hongbo, Han Yuhai, Zhang Xiaoliang, Liu Jili, Ji Chengying, Zhai Qi, Sun Wei, Zhou Shuo, Zhou Tuanfeng, Li Wei, Wang Fuhai, Fu Jinquan and Long Hongbo.
The..