kt board (forex board,advertising ps foam board) 1.Thickness:2mm-20mm 2.Size:920mm*2440mm,1220mm*2440mm kt board (forex board,advertising ps foam board)Paper Board is an extruded polystyrene foam center board with clay coated paper linersStucture:Paper Liner + Polystyrene Foam Core + Paper LinerColor: white ,red ,blue,yellow,green,black, gray Character:1.Smooth ,high-impact facers resist warping2 ...