Diamond Tools, Polishing Pads, Grinding Wheel manufacturer / supplier in China, offering 4′ ′ 7-Step Diamond Wet & Dry Copper Bonded Polishing Pad for Concrete and Stone, Abrasive Disc Diamond Grinding Cup Wheel for Marble Concrete Granite, 4"Resin Filled Metal Bond Cup Wheel Diamond Grinding for Marble, Granite, Stone, Tiles and so on.