... hardening. Hardness is HRC62 after polishing Inner structure: single-layer, multi-layer screw, Z and other structure.Processing: Chroming, Ceramic, ... Brief, up to 750*6000mmProduct PictureEmbossing Roller1. 3D, laser engraving,special engraving.2. Emboss with paper roller or ... is pyramid,comby,dot,mess dot,diamond,hexagon,sloping line and others.Heating RollerCooling Roller1. HRC55~58.2. Inner ...