KARACHI (APP) - Pakistan State Oil (PSO) has invited bids for supply of 66,000 metric tons of JET A-1 from international sources. According to PSO here Wednesday, the company will need firm shipment of 16,500 MT of Jet A-1 during January 2011 and two shipments of 16,500 MT each in February 2011 while one optional shipment of 16,500 MT in February 2011. The bidders must quote C & F price for Keamari. Bidding will be held on January 4, 2011.