Polyvinyl alcohol (PVA) fibers, commonly known as PVA fibers, are a type of synthetic fiber produced from high-polymerized polyvinyl alcohol (PVA) using advanced processing techniques. These fibers are characterized by their high strength and modulus, low elongation, wear resistance, and good resistance to acids and alkalis, as well as excellent weather resistance. They have good affinity and bonding properties with materials like cement and gypsum, are non-toxic, non-polluting, and do not harm human skin, making them safe for use. PVA fibers are among the green building materials of the new generation of high technology. The raw material for producing PVA fibers is a water-soluble high polymer with properties between plastics and rubbers, and it has a wide range of applications. PVA-formaldehyde shrinkage fibers are used in the industrial field for making canvas, waterproof fabrics, filter cloths, conveyor belts, packaging materials, work clothes, fishing nets, and cables for marine operations. High-strength, high-modulus filaments can be used as the frame material for conveyor belts, as lining materials for various hoses, belts, and shoes, and can also be made into bicycle tire cord. Due to their resistance to alkaline cement and good bonding and affinity with cement, these fibers can replace asbestos as reinforcing materials for cement products.