... Chroming, Ceramic, Hard Chrome plating (Dupont formula), chrommantel compact, adhesion strong.Mirror, 3M grinding, Ra0.005, finish14, Precision: temperature difference ... : Donghui Roller’s main Products Product NameProduct Brief, up to 750*6000mmProduct PictureEmbossing Roller1. 3D, laser engraving, ... laser engravuring, 3D design and others technology.Mirror roller, Ra is up to 0.01, accurancy is 0.001 ...