NR-8586: Speed and kinetic energy rubber. Outstanding elasticity, fast ball release. The collision between the layers when hitting the ball produces mechanical energy loss and can effectively transfer energy to the ball. The flexibility of natural rubber can grab the ball, while the repulsive force of synthetic rubber reacts to the ball, which allows this rubber to concentrate energy well. This rubber is very light, and you can still swing the racket at will even if you stick a thicker one.
NR-8588: New VA sponge technology, through a new process to keep the sponge in long-term tension, you can see the tension of the rubber when you open the package, with a slight bow, energy accumulation, ready to go. Use this technology for Hammond Zini, let you experience faster speed and elasticity. Especially suitable for 40+ new material balls, more elastic and more internal energy.
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