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Electronic Javelin is a smart javelin that can measure the throwing distance automatically.
A tiny location device is added in the middle of the electronic javelin. As a result, without affect its weight or balance, the new javelin can quickly and precisely measure the records of athletes in the javelin competitions.
Electronic Javelin contributed to practice the impartial, fair and open rules of competitive sports, and has effect on promoting the development of javelin sport.
Wenxi/Li Siyu/Xu Wenxi/Wang Xiaoyu/Wu