4 Inch Diamond Metal Concrete Floor Polishing Pad Dongguan Merrock Industry Co., Ltd. Base Info Manufacturing Process：Cold PressShape：CircleBonding Agent：MetalTrademark：MRKTransport Package：CartonSpecification：4 inchOrigin：China Description Pre：1A1 Hybrid Bond Diamond Grinding Wheel for Bruting Next：1A2 Resin Bond Diamond Grinding Wheel for Natural Diamond Gemstone
