... improve the service life of cutting toolsApplication scope: 1. Marble, granite, China's black, bluestone, jade, ceramics, crystal, glass, ... cutting, fall edge, drilling.2. Granite stone can be layered engraved to 5 mm3. Marble, stone, etc, can be engraved to 5 ... operation.Performance Parameters: NO.PerformanceGF-1325 / GF-9015 Stone cnc engraving machine(can adjust size according your requirements) ...