... made of high density polypropylene. PP Corrugated Plastic Sheet This product is made of high density polypropylene ... current products are 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12mm and with ... buffer/protection The hollow structured of PP corrugated sheet and its impact-proof, compression resistant characteristic is ... and hollow structure of PP corrugated sheet can easily be beat and cut. It can be designed as ...