... circulation system, spray nozzle, specially designed for stone, glass and soft metal processing. Easy operation, sturdy, durable reliable performance, reasonable ... to process stone products and most non-metal and some soft metal materials, for example, acrylic, PVC, Foam board, stone ... -coolingPower SupplyAC 110V-240V, AC380V. 50Hz or 60HzSample pictuer: hot sale granite stone laser engraving machine