... Grit (#) :50,150,300,500,1000,2000,3000 Hebei Yanjin Imp.&Exp.Co.,Ltd. is a professional polishing pad manufacturer and supplier with rich ... )/4”(100mm)50,150,300,500,1000,2000,3000Wet onlyPolishing stone,porcelain,glass,etc.The polishing material is high resilience and ...