Diamond Polishing Disc for Concrete Grinding Dongguan Merrock Industry Co., Ltd. Base Info Manufacturing Process：Hot PressShape：CircleBonding Agent：ResinTrademark：MRKTransport Package：CartonSpecification：3 inchOrigin：China Description Pre：3A1 Ceramic Bonded Diamond Disc Type Superhard Material Grinding Wheel Next：Concrete Ground Abrasive Polishing Pad
