3KW Marble/Granite/Gravel/Bowlder Engraving Machine 1.Stepper motor,servo optional 2.Power:3KW, ... 4.5kw,etc 3.Metal engraver 3KW Marble/Granite/Gravel/Bowlder Engraving MachineFeatures:1. The machine body is strong, rigid, high ... signs, acrylic, plastic membrane system and large-scale cutting, seal crafts, badges, scale, sculputure and iron, copper, plastic sheeting, wood or ...