... treatment process of quenching and temperaing, multiple to stress, hardening. Hardness is HRC62 after polishing Inner structure: single-layer, ... Brief, up to 750*6000mmProduct PictureEmbossing Roller1. 3D, laser engraving,special engraving.2. Emboss with paper roller or ... , alloy steel, stainless steel and others.Embossing roller, laser engravuring, 3D design and others technology.Mirror roller, Ra ...