European standard: <br>rubber surface can be resolved with the naked eye using a slim design, so that colloidal particles can <br>penetrate deeper sponge, since the weight of the sponge cake air spacer absorbs impact <br>energy is then released out, so as to transmit more energy to the on the ball, like a spring <br>effect like, you can create a stronger rotation speed has not lost the ball, <br>and guarantee a longer arc trajectory, as well as enhanced control than passive, which <br>is high-elastic sponge cake catch the ball and excellent sense of the perfect combination.
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