Polypropylene fiber(PP fiber), also known as anti-cracking fiber, PP fiber, or concrete fiber, is a high-strength bundled monofilament fiber made of polypropylene. The addition of our polypropylene fiber products to mortar or concrete can effectively control the micro-cracks of concretes or mortars caused by plastic shrinkage, dry shrinkage, temperature changes, and other factors, etc. At the same time, it can also prevent and inhibit the formation and development of cracks, thereby significantly improving the penetration resistance, impact resistance, and earthquake resistance of concretes.