... min 4.CNC 110V China CNC Milling Machine for PCB (300*300mm) Applications:Can be used for advertisement engraving, advertisement cutting, stone processing ... Spindle:1.2KW variable speed, water cooled motor14) Spindle speed:0 - 24, 000rpm15) Blade diameter:3.175,4,6mm16) ... ) Command: G code, u00, mmg, plt18) Running circumstance temperature:0 - 4519) Relative humidity:30% - 75%20) Optional items:linear ...