sentences:  ONGC Petro additions Limited (OPaL), a multi-billion joint venture company was incorporated in 2006, as a Public Limited Company under the Companies Act, 1956, promoted by Oil and Natural Gas Corporation (ONGC) and co-promoted by GAIL and GSPC.OPaL is setting up a grass root mega Petrochemical project at Dahej, Gujarat in PCPIR/SEZ.The complex's main Dual Feed Cracker Unit has the capacity to produce 1100 KTPA Ethylene, 400 KTPA Propylene and the Associated Units consists of Pyrolysis Gasoline Hydrogenation Unit, Butadiene Extraction Unit and Benzene Extraction Unit.