Profile: Polymate Additives Co., Limited is specialized in polymer production and consumption. Our polymeric products include anti-oxidants, heat stabilizers, light stabilizers, and flame retardants. Our anti-oxidants are divided in two basic classifications: primary and secondary anti-oxidants. Primary anti-oxidants interrupt oxidation degradation by tying up the free radicals. They react rapidly with peroxy radicals to break growing chains. Secondary anti-oxidants destroy the unstable hydroperoxides that function as sources of free radicals during oxidative degradation. They react with hydroperoxides to yield non-reactive products. Heat stabilizers are used to prevent oxidation of plastics by heat, and are also widely used in PVC compounds.