waterproof abrasive paper Product process: Electrostatic sand-planting Product characteristics:soft paper base, no curling,and no sand drop in soaking Uniform distribution of selected abrasives,enhance the grinding effect of the product Grain:Silicon carbide; brown corundum/aluminum oxide Base: Latex paper, Kraft paper Standard specification:230 280mm Application: Mainly used for polishing and grinding of mould,metal,woodwork,stone,steel,automobile paintwork.