Not all balls are marked with S, and the big "SPALDING”LOGO on the front and back all have small letters of" yc "with strong three-dimensional sense, which is false or not" yc "with the real thing.

Buy a ball to do the following:

1, looking for Spalding trademark.

2. Check the overall production process.

3. Check the bounce, circumference, rotation center, ball mouth technology and comprehensive feel.

4. Check whether the free needle and net are complete.

5. Check whether the printing quality and number of the certificate are consistent with the bar code number on the ball.

6. Check whether the retailer has the designated dealer certificate and logo specially issued by Shanghai Katsu Hoshi Sporting Goods Co., Ltd. ..

7. If you are not sure of the authenticity, you can call Spalding China general agent Shanghai Katsu Hoshi Sporting Goods Co., Ltd for consultation.