Decorative pieces began to structure, functional pieces within the current direction of development, building materials and other products from plastic. Plastic flooring, wall decoration pieces maintained a steady growth in sales of PVC plastic pipe fittings, polymer construction template, waterproof material, wall supports, wall insulation panels, plastic bricks strengthen more and more applications of PVC plastic pipe products its growth rate is more than the plastic pipe. Plastic profile industry's main products include: plastic doors and windows, plastic pipes, plastic sheets, plastic sheets for waterproofing and plastic profiles. Among them, the plastic profile, plastic pipes, plastic sheets and other products in China has formed a huge chain of chemical building materials PVC plastic pipe, plastic profile only to have an annual production capacity of 2.8 million tons of PVC plastic pipe supply, China has enter the ranks of plastic powers. Long-term use temperature of most PVC products should not exceed 55 ℃, but specially formulated PVC for long-term use temperature up to 90 ℃. Soft PVC products will harden at low temperatures. PVC because it contains chlorine atoms in the molecule, so it and its copolymers generally fire flame resistant, self-extinguishing, non-drip. PVC resin is a less stable polymer, will degrade under the action of light and heat, the process is hydrogen chloride evolution, structural changes occur, but the extent of relatively light. At the same time when a mechanical force, oxygen, odors, HCl and some of the active metal ions accelerate decomposition. PVC plastic pipe fittings | Sea Widex (certified) | PVC plastic pipe provided by Qingdao Rubber Material Co., Widex. Widex Qingdao Rubber Material Co., Ltd. (www.haihuidaxiangsu.com) is Qingdao, industrial products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Widex leadership in the sea with the staff warmly welcome all inquiries negotiations to create sea Widex a better future.