CNPC's global oil trading unit posts 13 pct profit growth in 2018

* Top Chinese energy group CNPC said on Thursday its global oil and gas trading unit recorded 12.7 percent growth in pre-tax profit last year from 2017, and its annual turnover hit 480 million tonnes * In 2018, CNPC's trading unit Chinaoil imported 94.17 million tonnes of crude oil, or about 1.88 million barrels per day, accounting for 20 percent of China's total crude oil imports last year, CNPC stated on its website * The state energy giant did