A, excellent ozone resistance molecular structure and oxidation resistance of EPDM contain double bonds in the main chain, can be completely resistant to ozone in the air attack. In the ozone concentration is 100PPHM environment, 2,430 hours is not cracked (Butyl rubber 500 hours cracks, crack neoprene 40 hours); in 50PPHM, pulling down 30% of the static condition, 150 hours no cracks ( Butyl rubber cracking two hours). B, excellent weather resistance EPDM long-term use in the sun, damp, chilly natural environment. CB vulcanizates containing three years of sun exposure does not appear cracks, very small changes in physical and mechanical properties. C, excellent heat resistance EPDM long-term use at 120 ℃ conditions, maximum use temperature 150 ℃, when higher than 150 ℃ begins to decompose, when the addition of suitable anti-aging agent or a peroxide, quinone vulcanization system intermittent temperature up to 315 ℃. This feature is its saturated backbone structure of the decision. D, excellent low temperature properties of poly methylene backbone flex provides a good low temperature properties, glass transition temperature between -35 ℃ --65 ℃, most of vulcanized products at -25 ℃ or soft conditions i.e., has good flexibility and less compression set, so that it will not reduce the ambient temperature is too low and the sealing performance in cold regions, making it easier construction in cold regions at a low temperature. E, chemical resistance EPDM resistant to many polar solutes, such as brake oil, acids, alkalis, alcohol; poor resistance to non-polar solute properties, such as gasoline and other hydrocarbon solvents, such as through the use of ultra-high molecular oil filled case available under moderate oil resistance. F, EPDM synthetic rubber, almost all of the lightest kind of gravity (also below plasticized polyvinyl chloride), so the finished product will have a lighter weight per meter. This also determines that they have a wide range of applications. EPDM has many advantages in addition to the above, only a small density EPDM, has excellent electrical properties, good stress - strain characteristics, good abrasion resistance, excellent moisture resistance and resistance to water vapor products are widely used in residential buildings, commercial buildings, stadiums and bridges and dock fenders, etc ...... bull strong technical force, advanced production machines and ten years of production experience and technology. And a professional installation team and perfect after-sales service system. Factories have from product design, material preparation, design mold design and manufacture, physical and chemical testing to the whole process of manufacturing, production, quality assurance systems. Through the ISO international quality management system certification