Polypropylene fibers are synthetic fibers spun from isotactic polypropylene obtained by polymerizing propylene, known as "polypropylene" in China. These fibers offer high strength, good toughness, excellent chemical resistance, antimicrobial properties, and low cost, making them widely used in industries such as ropes, fishing nets, safety belts, bag straps, safety nets, sewing threads, cable sheaths, geotextiles, filter fabrics, paper felts, and reinforcing materials for paper.

Polypropylene woven geotextiles, manufactured utilizing the superior properties of high strength, acid and alkali resistance, antimicrobial properties, and equal strength in wet and dry conditions, can reinforce civil engineering projects built on soft soil foundations (such as dams, reservoirs, highways, railways, etc.), evenly distributing load bearing across the geotextile, ensuring uniform settlement of the subgrade, and reducing ground cracking. When constructing slopes, woven polypropylene geotextiles can stabilize the slope, minimize slope failures, shorten construction time, and extend the slope's lifespan. For heavier load-bearing applications, composite geotextiles with woven and nonwoven bases can be used. Polypropylene fibers can serve as filling materials for concrete and mortar, enhancing the impact resistance and waterproof insulation properties of concrete.