... with water cooling circulation system, spray nozzle, specially designed for stone, glass and soft metal processing. Easy operation, sturdy, durable ... some soft metal materials, for example, acrylic, PVC, Foam board, stone, copper, aluminum, plastic plate, wood, glass etc.Main Configuration ... SupplyAC 110V-240V, AC380V. 50Hz or 60HzSample pictuer: hot sale granite stone laser engraving machine