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Sometimes people want to play badminton at night .However,at that time ,you must go to the place with lights. This problem has caused much trouble to the players.Night Badminton answers the question how to play badminton at night without external light source. When the player hits the badminton with badminton racket ,the head of badminton and the mesh lines of badminton racket will strongly shake ,which will change mechanical energy into electic energy and light the LED ,so, Night Badminton could provide itself with enough engery ,which is enery-saving environmentally-friendly . At the same time,Night Badminton can bring yo
Zhao Bin Pang jianju Huang jianbo Hu jie Wang yu