Industrial production of PVC molecular weight generally in the range of 50,000 to 110,000, with a large polydispersity, molecular weight with lower polymerization temperature increases; no fixed melting point, 80 ~ 85 ℃ begins to soften, 130 ℃ into a viscoelastic state , 160 ~ 180 ℃ began to change for the viscous flow state; have good mechanical properties, wear fire-retardant board, tensile strength of about 60MPa, the impact strength of 5 ~ 10kJ / m2; has excellent dielectric properties. PVC production was the world's largest general-purpose plastics, it is widely used. In building materials, industrial products, daily necessities, floor coverings, floor tiles, leather, pipe, wire and cable, packaging films, bottles, foam materials, sealing materials, fiber, etc. are widely used. PVC board is a cross-section as the raw material for PVC sheet honeycomb mesh structure. Is a vacuum film Ningxia wear fire-retardant board for packaging various types of panel surface, it is also known as decorative films, with film, used in building materials, packaging, pharmaceutical and other industries. Building materials industry accounted for the largest proportion, 60%, followed by industry, packaging industry, there are a number of other small-scale applications. It can be divided according to the hardness of the soft PVC and hard PVC. According to the production process can be divided into PVC crust foam board and PVC free foam board. Zhejiang wear fire-retardant board _ Conte sheet (Certified) _ wear fire-retardant board provided by the Shandong Petroleum Equipment Co. Conte. Conte Shandong Petroleum Equipment Co. (www.njtlgcbc.com) Shandong Texas, a plastic plate (sheet, section), rods leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. Conte plate in leadership with the staff warmly welcome all inquiries negotiations to create a better future Conte plate.