Three-proof fabric is coated with PVC, PTFE, flame-retardant silicone, and other fire-resistant materials on the surface of refractory fibers, making it fireproof, waterproof, and moldproof. Refractory fibers provide fire resistance, while PVC, PTFE, and silicone offer waterproofing properties. The polyvinyl chloride (PVC) coated fabric is based on glass fiber fabric, glass wool fabric, and chemical fiber fabric, produced through a special coating process. Its main performance features include: waterproofing, flame retardant, moldproof, cold-resistant, corrosion-resistant (commonly known as three-proof fabric, five-proof fabric); aging resistance; UV protection; easy to clean; high-temperature resistance (over 180 degrees), and good heat retention.