PP corrugated board/sheet/tray/plate 1,usage:advertisement,buildings,etc 2,place of origin:Tianjin 3,thinkness:2~10mm plastic sheet1, PP plastic sheet ... ,which is a green material, is widely used abroad2,PP hollow board because of its widely used, easy to use, also ... known as Wantong board, which is widely used in advertising background, stationery, materials, ...