... cut cylinder, triangle, angle-cut triangle, tri-star, three-ray star, angle-cut tri-star, cone, wedge, rhombus, tetrahedron, paraboloid, ... can produce all kinds of polishing medias and ceramic grinding media,including abrasive media,plastic media polyester ... alumina and chromic fused alumina, silicon carbide and plastic,ceramic grinding media, high chrome grinding media, zirconium grinding media ...