Brent negotiations, a benchmark for Angolan oil exports, opened higher on Monday in the international market, standing at US$80.73 per barrel at the time of writing, registering a daily variation of 79.65 to 81.24 , up to the time of the survey. Despite Brent falling 10 percent last week to $80 a barrel, China’s demand prospects remain strong despite the commodity’s recent decline, experts say. Goldman Sachs bank raised its China demand forecast to 16.0