PP corrugated sheet (also call pp hollow sheet ,pp twin-wall sheet ) is made from Polypropylene (PP) block copolymer, it is an extruded hollow profile sheet consisting of two flat walls connected by vertical ribs. PP Corrugated Sheet is absolutely harmless and smelless, and moisture resistance & anticorrosion. Its special and great properties such as strong, lightweight, various colors, etc. Could prove that it is suitable in the uses of packaging, printing ,advertising, construction and agriculture. Plus, it's price is charmer, and that will save a lot of cost for you.