Karoon petrochemical company (KPC) has appointed by national petrochemical company to implement the “isocyanates” plant in Mahshahr petrochemical special economic zone. Chematur company (Sweden) and Hansa Chimie (Germany) are collaborating as founders and shareholders, with KPC in implementation of above complex. Final products of “isocyanates” plants are MDI, TDI (each 40,000 tons/year) which will be used as raw materials for manufacturing of polyurethanes foams and sponges, automotive parts and insulation materials. Iran industrial networks development company (IIND) has been awarded the contract for construction and erection of mechanical equipment, piping, insulations and, electrical equipment, instrumentation, pre-commissioning and test activities of this plant was completed in 2005.