Hollow sheet has characteristics of light quality, easy process, solidity, pressure resistance, heat insulation, etc. Features:1 Feather ... red, blue, yellow, green,black,etc. Applications: 1 Advertising: Advertising boards,signs, shopwindow displays, pop-up ... evironments, ductsSpecifications: 1 Thickness: 2mm--12mm;2 Special sizes available upon requests pp hollow sheet , corrugate plastic sheet