... ink 4 reasonable price item name electronic cardboard box,magnetic electronic cardboard box,promotional electronic cardboard boxSize customizedmaterialcover: ... 4c print one side inner: 300gm grey card mount,1r300gm grey board,1c printingnumber of color1-4C ... or morepantone colorSurface finishingdie cutting,mount,cover matt lamination,silver stampingprinting qualityoffset printing , ...