... 4.OEM,CE,ISO9001 SD-1313Y column cnc router,3D cnc engraving machine for column/cylinder Scope of application1.stone ... Advertising industry: Large advertising signs, acrylic brands, tableets, calligraphy, 3D characters, garden or wall decoration, logo, forming system module, ... diameter and length of the rotary,different kinds of material can be processed,which vastly expands the application scope ...