浙江3M621X精密研磨砂纸3M 621X精密研磨砂纸
型 号: 3M 621X产 地: 美国 运 输: 海陆空 3M  Diamond Lapping Film, 621X Sheets This premium diamond abrasive film offers a consistent, precision finish on extremely hard materials. Highly uniform 0.5 mil polyester film backing. Available in 0.1 - 6 micron grades.