... is option)Work voltageAC380V/50Hz Suitable Industry1. Granite, Marble, Bluestone, Sandstone and other stone engraving2. Hard ... Marble, Bluestone and so on can be engraved to 5mm each time4.non-ferrous metal sheet, Such as aluminum veneer, aluminum composite panel ... , copper, PVC board, acrylic, insulation materials, wood and composite panels such as sheet ...