... stepper subdivision driver control,numeral timing,simulation quantum control laser power,little error,repetition high precision,engrave 3mm little ... rubber,acrylate,woodiness,marble and crystal. 6. Professional 3D rotary device,engrave circumrotately 360 degree,meet different engraving ... AirBlower,Air Pump(100+250+105)WPower of the Laser Pipe 60WTemperature of Working0-45degreeHumidity of Working5%-95% ...