electronic cardboard box 1 offer OEM service 2 As client's demands 3 recyclable material &ink 4 reasonable price item name electronic cardboard box,magnetic electronic cardboard box,promotional electronic cardboard boxSize customizedmaterialcover: 157gm coated paper mounted 1200gm grey board,2c printingcoated paper,4c print one side inner: 300gm grey card mount,1r300gm grey board,1c ...