... . Granite, Marble, Bluestone, Sandstone and other stone engraving2. Hard stone like Granite can be layered engraved to reach 3mm3 ... , copper, PVC board, acrylic, insulation materials, wood and composite panels such as sheet processing, cutting, slotting, engraving, milling, etc.Performance ... lifetime of tools.Guarantee & after sale service Guarantee for 14 months,24-hour technical support by email or ...