... big bag, PP bulk bag, PP Jumbo bag, Sack bag, FIBC bag1. Materials: Polypropylene (PP) 2. Model: Cubic bag, Circular bag, U-Panel bag, Baffled bag, Tubular bag, etc ... duffle spout 6. Discharge spout or flat bottom 7. Loops: Single loops, two loops, three loops or 4 cross corner loops ...