... CE, CARB, ISO9001, ISO14001 3)Feature: double-sided 1, Base board: MDF 2, Size:1220mm*2440mm 1220mm*1220mm ... side half groove: Edge of display panel has a ½ groove at the top and bottom allowing ... the panels to be installed one and another without a seam. 6, Groove styles : ellipse , rectangle ... 65mm, 90mm,140mm,190mm,280mm, or customized. 9, Board surface: melamine , raw 10,Melamine color: solid color ...