(EnergyAsia, March 27) — China’s largest oil and gas company, PetroChina Co, is planning to build a 10 million tons/year oil refinery in the southwestern province of Sichuan. The refinery, to be linked to an 800,000 tons/year ethylene cracker, will be located in Sichuan’s capital, Chengdu city.    PetroChina will team up with the Sichuan…