The package involves the construction of a liquid processing unit to incorporate a heavy paraffin converter, a synthetic crude distiller and related product splitters. Bids were submitted on the same day by three groups of companies for the estimated $700 million-1,000 million C4 contract, covering a 1,600 million-cubic-feet-a-day feed gas processing facility. The bidders are: a team of Petrofac, US-based Black & Veatch and India's Larsen & Toubro (L&T); Japan's Chiyoda Corporation, with South Korea's Hyundai Heavy Industries (HHI); and Hyundai E&C, with Toyo. For the air separation units (ASU) package, two groups of companies submitted bids. Called C2 and worth $800 million-1,000 million, the package covers the construction of eight ASUs to deliver 28,800 tonnes a day of oxygen.