... by using automatic water cooling system... CNC Router for Marble,Granite,Stone Characteristics: 1.Imported linear square rails, dual four slider ... system, effectively raising tool life Appliable:Granite, marble, Qingshi, sandstone, and other stone carvings Granite and other hard stone carving to be ... wishing you have a prosperous business! CNC Router for Marble,Granite,Stone(with CE Certificate)