... its reliability greatly.4. With imported gilded lens with silicon base and focusing lens, the beam is sharper and cutting force ... DXF, BMP etc format.7. The "front" and "back" of laser machine is open, suitable for processing unlimited length material.8 ... crafts works, touching screen and related industry, etcs.Technical parameters:Laser Power:60W~130WWorking area:900mm X 1220mmMax. size of workpiece ...