... .718 The engraving instructon: HPGL,Gcode19) Knife pressure: 0.7Kpa20) Cleaning power : 2.2KW21) Absorption power: 5KW22) Gross power: 20KW ... wind,process of the artistic window,shoes cleaning machine,the cabinet of the playing machine and the board,mahjong table,computer table ... aluminum ,iron etc and non-mental materials such as man-made marble, sand, plastic board PVC materials, wood board etc. ...