... 3.No pollution & consumption 4.Long lifetime CO2 high speed Laser Marking Machine JQ-30 to make serial number/barcode etc ... speed is extremely fast and the precision is very high. The machine performance is steady and can continuously working 12 hours ... , glass, crystal, stone, MDF, dual-color board, organic glass, paper, jade, agate, etc.Applicable IndustriesTobacco, food and beverages, wines, medical ...