... 5, Adopt DSP digital chip controlling board, digital adjustment the laser power and speed, be compatible with CorelDraw,CAD directing-outputting ... BMP, PLT, AL, DST, DXF and other file format; 6,Optical path adopts the resistant molybdenum mirror and imported focus lens ... industry category and materials. 4, 3M synchronous belt make laser heade long-term and stable operation. Brass and stainless screw ...