we are the manufacturer to supply Plastic materials :: 1) PP corrugated sheet,Stardard dimention: 4x8", thickness are from 2mm,3mm,4mm, and 5mm with 13 color Black, white, clear, blue, green, pink, orange, grey, brown, green-blue, light green, yellow, and red for your selection. Pp corrugated sheet is suitable for advertising sign board, packaging protection sheet in lighter weight, corrugated stock box, and even you can do it by yourself for a computer chair, or a lovely puppy house. 2) PP Container box/case are made to order for each customer specification. 3) tie down ..safety fastern belt of cargo trucking in transportation.