1.Imported stepping motor driver 2.Auto feeding and unloading design ... back-open design, Imported linear guide way, Step motor, sealed cooling system, Air Compressor and professional exhausting ... Focus lens: 1 pcLaser power supply 1 pcStep motor 2 pcOptional parts:American RF laser tube, American ... Side moving table, CCD camera facility, Clamp, Servo motor, Red positioning facilityMulti-head function