Sanwei ABS Club ABS40+ TR Tranning ball

New Table Tennis Ball New Material Plastic Poly Ping Pong Balls Introduction of the 3D ABS40+ TR Training Ball Material: modified ABS+ formula Process: Hemispheric one-time molding process Bounce: 250-260mm size：40.0mm-40.6mm Standard deviation of mean diameter: ≤ 0.08 Melting point: 217 °C—237 °C Water absorption: <1%