Use of wires, cables, plastic tube heating machine to print a special number. With a zero crown. Character height 1.5mm to 8mm are, special specifications can also be customized according to customer requirements, products using imported steel, heat strong, digital CNC carved sculpture, print Make, Model specifications, the main technical parameters, date, meter number and other information. Glyph font height and bits and spacing according to customer request. This product can also undertake non-standard orders according to user requirements.