magnetic glass writitng boards is a new item that overcomes traditional one,it sells well on Europe,USA market. SpecificationSize: LW 35 x35, 45 x 45,30 x 40 ,40 x50, 50 x60, 60 x90Component: Face: tempered glass with colorized silk printing on the back Thickness of 4mm or 5mm Back: galvanized iron sheet with resin coatingPacking-Inner packing: packed with corners-safe ,bubble-wrap ,polyfoam, and ...