Global petcoke prices kept chugging higher this week despite a consensus among buyers the market is overpriced and a correction is due. SEE MORE Copper prices fell on Friday as the dollar strengthened ahead of next week's Federal Open Market Committee meeting, at which the U.S. central bank is expected to raise interest rates for the first time this year. SEE MORE March contract discussions are still ongoing in the European polystyrene (PS) market as some players in the packaging industry have just started first negotiations and others will follow next week, sources said on Friday. SEE MORE Oil prices were set to fall this week, despite a slight gain in both benchmarks on Friday, on concerns among investors about rising supply from the U.S. and elsewhere threatening to undermine efforts by OPEC and other producers to tighten the market. SEE MORE Vietnam’s safeguard tariffs on imports of diammonium phosphate (DAP) and monoammonium phosphate (MAP) fertilizer are delivering a blow to farmers as their farming costs are picking up. SEE MORE