Iran Delco company in 1991 was registered in Tehran – Iran. In the early years, its production was distributor for different type of cars that were stopped along with outdated carburetor system. The first researches on catalytic converters in collaboration with the Scientific and Industrial Research of Iran began in 1994 and continued during 2000 to 2003 in the context of a joint investigation by SAPCO Research institute in the production of metallic and ceramic catalytic converters. The first Catalysts converter's standard in 2004, under the standard number of 7370, with the direct management of Iran Delco Company in the Bureau of Standards of Islamic Republic of Iran has been defined. After purchasing and transferring of machinery from Germany in 2005 the mass production of catalytic converters with Euro 2 standard began. Full set of exhaust line of cars in 2008 with an emphasis on technical expertise and facilities was launched into mass production. Research and Development launched in 2008, and finally after 3 years of continuous efforts and costs, in 2011 Iran Delco could reach to the production technology of Euro 4 and 5 emission standard.