... non-metals 3.No pollution & consumption 4.Long lifetime CO2 high speed Laser Marking Machine JQ-30 to make serial number/barcode etc ... with original American RF and high-speed galvanometer,the speed is extremely fast and the precision is very high. The machine performance is steady and ... , leather, plastic, rubber, wood products, advertisement, arts and crafts, glass, printing, ornament, jewelry, etc.