From practical needs: Price for rent Court, Teacher is very high Additional, The room in the small city is not enough for tennis court Therefore, we invented practice device Named TENNIS STORMER We have a special key to join the spring and the ball They will be tied together, and we can hit with very strong stroke Can practice with almost stroke: Smash, serve, forehand, backhand, volley… We hope that, with this equipment, almost people can play tennis and without thinking a bout weather, money or partner

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Dennis Veasley


  1. Hoan hô anh Khải, một sáng chế tuyệt vời. Nên bán ra thị trường quốc tế. Khoảng $100 ở Mỹ chắc chắn sẽ có nhiều người mua.

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