... tube:CO2 4. option rotary SF450 Laser engraving and cutting machine :Specification:Model SF-450Processing area400*500mmLaser tube50WEngraving speed1- ... : SF450 laser engraving machine is suitable for art and craft, advertising decoration, toy, electronic industry, cutting of model, paper ... feeding can be unlimited. 4. The body of the machine adopts high quality aluminum, professional model and has the ...