Orchem supplies rubber chemicals and related products to the tyre and associated industries. The products are categorised as antioxidants, antiozonants, accelerators, blowing agents, bonding agents and miscellaneous classes. The purchased final product specifications are compiled based on the total, overall, global suppliers' data as well as historical development and basic technology plus previous polymer manufacturers' data, with whom know-how agreements were held. As a rule Orchem does not normally prescribe to its suppliers the format, nor the specific tests to be done on their COA's. The standard COA's as supplied are accepted.