... electroplated, zinc etching, resin etching,letter etc.can be used. Uniform ink colour,chromatograph accurate.HF-3-5 color machine utilizes sensitive delivery ... of winding ribbon, pressure-sensitive paper etc.HF-4 colour machine,1/4 printing on bottom,3/4 printing on surface ... .HF-5 colour machine,1/5 printing on bottom,4/5printing on surfaceSPECIFICATIONSTypeHF-3HF ...