... quality. 3. Match professional laser electrical power and laser tube with high quality,make the laser engraver run stably. 4. ... stepper subdivision driver control,numeral timing,simulation quantum control laser power,little error,repetition high precision,engrave 3mm little ... Pump,AirBlower,Air Pump(100+250+105)WPower of the Laser Pipe 60WTemperature of Working0-45degreeHumidity of Working5%-95% ( ...