https://www.polishingslurry.com/products/alumina-polishing-powder-0.3-microns/ Micro alumina polish powders provide superior quality polished surfaces with a high removal rate and long slurry life. Nano alumina powder not only has the characteristics of stable wear resistance of α-alumina powder, but also has nano effect. The surface tension of abrasive powder is large, the binding force is strong, and the surface of high precision can be obtained when it used for polishing.