ERA Factory Supply 50 Year Warranty PVC thread fittings BS standard reducing nipplenThe main component of PVC is polyvinyl chloride, and other ingredients are added to enhance its heat resistance, toughness, ductility, etc. The top layer of this surface film is paint, the main component in the middle is polyvinyl chloride, and the bottom layer is back-coated adhesive. It is a synthetic material that is loved, popular and widely used in the world today. Its global usage ranks second among various synthetic materials.nThe essence of PVC is a vacuum plastic-absorbing film, which is used for surface packaging of various types of panels. Therefore, it is also called decorative film and adhesive film. It is used in many industries such as building materials, packaging, medicine, etc. Among them, the building materials industry accounts for the largest proportion, 60%, followed by the packaging industry, and several other small-scale application industries.