Differentials in the S&P Global Platts Dated Brent crude oil benchmark could receive a boost this week, having hit a two-and-a-half year low last week. SEE MORE Chinese President Xi Jinping on Tuesday promised to open the country’s economy further and lower import tariffs on products including cars, in a speech seen as an attempt to defuse an escalating trade dispute with the United States. SEE MORE Gold prices were lower on Monday as gains in U.S. stock futures and a firmer dollar dampened demand for bullion, despite simmering trade tensions between the U.S. and China. SEE MORE London aluminium rallied more than 2 percent on Monday and is likely to gain further on concerns that sanctions by the United States on aluminium giant Rusal could hamper trade in some 7 percent of the world's annual supply of the metal. SEE MORE Players along the European polyethylene terephthalate (PET) chain were bracing themselves on Friday for a further squeeze on supply in the event that an upstream force majeure lingers into the second week of April. SEE MORE