... all over the world Imported linear square rails Professional in stone/granite/marble engraving 1>imported linear square rails, dual ... precision, long life, under the knife precision. 2> The CNC Stone Engraving Machine seamless welded steel structure, rigid Haobu deformation, table ... voltageAC220V/50HzSpindle power2.2kwSpindle rotating speed0-24000rpm/minDrive motorSteper8 CNC Stone Engraving Machine