Butene 1 unit of JAM Petrochemical Complex, under AXENS Company’s license and basic engineering of Nargan Company, with a capacity of 100000tons a year is the largest butene producing unit in the country which holds feasibility to supply the needs of other poly olefin companies of the country in addition to supply the needs of low hand units of the complex, also a major part of products are expected to be exported to consuming countries.