Polypropylene fiber, also known as concrete fiber, is a high-performance fiber specially used for concrete/mortar. It can effectively control the microcracks caused by factors such as plastic shrinkage, drying shrinkage, and temperature changes of concrete/mortar, prevent and inhibit the formation and development of native cracks in concrete, and greatly improve the anti-cracking and anti-seepage properties of concrete/mortar, as well as its anti-affective properties, and increase the toughness of concrete, thereby improving the service life of concrete.

Concrete fiber is a plastic anti-cracking fiber specially used in cement concrete. It can prevent or reduce the initial plastic cracks of cement concrete and can be used as the "secondary reinforcement" of cement concrete.
Concrete fiber is made by adding modified masterbatch to polypropylene chips for blending, spinning and stretching. Concrete fiber is specially treated with anti-static and anti-ultraviolet light to make the fiber dispersed evenly in concrete and can play its role for a long time. Concrete fiber improves the performance of concrete by reducing the occurrence and number of original cracks in concrete. It will not have any conflict or chemical reaction with concrete aggregate, admixture, admixture and cement, so it has good adaptability with concrete materials.