... is made of high density polypropylene. PP Corrugated Plastic Sheet This product is made of high density ... polypropylene. This plastic product is non-toxic, odorless, anti-moisture ... reused and reduced. The thickness of current products are 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 ... lightweight but born heavy is best for packing. 3. For display/advertisement The surface of PP ...