Sinopec Chongqing Petroleum Branch was officially formed on January 27th toensure energy supply in the Chongqing market.The new company will comrmt to sales of oil products and gas for vehicles,and build sales network in the Chonqing region.An insider said that the move will bring to increase the market shares for Sinopec Chongqing Petroleum Branch was officially formed on January 27th toensure energy supply in the Chongqing market. The new company will comrmt to sales of oil products and gas for vehicles, and build sales network in the Chonqing region. Ann insider said that the move will bring to increase the market shares for