As China and the United States approach the next phase of trade talks, Beijing has launched anti-dumping and trade barrier probes into Mexico after the Latin American country proposed higher tariffs on Chinese goods.Analysts said the move signalled a warning from Beijing, as Mexico’s planned duties – affecting a range of countries, but sparing the US and Canada – are widely seen as an attempt to curry favour with Washington.On Thursday, China’s Ministry of Commerce launched an anti-dumping...