... all kinds of transportation box,mailbox, display rack, partition, gift box, etc. 2. Display/Advertising: The surface of polypropylene ... excellent. it iswater/heat-proof suitable for indoor/outdoor display board/advertisement. 3. Protection/buffer: the hollow ... suitable for packingelectronic products, steel roll, steel rope, wire or automobile, spare parts 4. Agricultural/cozy purposes polypropylene ...