4, the thermal conductivity of the thermal conductivity of small plastic is very small, about the metal 1 / 500-1 / 600 thermal conductivity foam only 0.02-0.046W / mK, is about 1/1500 of metals supply of plastic parts, concrete 1/40, 1/20 of an ordinary brick plastic accessories, is the ideal insulation material .5, chemical stability plastics for general acid, alkali, salt and grease has good corrosion resistance than the metal material and some of the inorganic material is much better, especially suitable for chemical plant doors and windows, floors, walls, etc. In modern society, people can not do without plastic. Whether it is used in everyday life plastic bags, plastic boxes, or in the computer, mobile phone plastic parts, but also whether it is within reach of plastic tables and chairs around us, or deeply buried plastic pipe lighting plastic parts, plastic products and people's lives. Since the production of plastics processing using a large number of chemical raw materials and additives, in particular in contact with drinking water and food as the end-consumer plastic products, and its performance, quality and safety of a direct impact on the rights of consumers and even body health. Plastic products, quality and safety by the community concern. Plastic parts factory, Rady Industry (certification), plastic accessories to provide benefits to the county by the Dongguan City Run Di Industries Limited. Di Industrial Co., Ltd. of Dongguan City Run (www.dgrundi.com) Dongguan, Guangdong, household plastic products leader, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Industry leaders at Rady staff warmly welcome all inquiries negotiations to create Rady Industrial better future.