<p>Rafael Moreno, whose company has opened demo plant in Brazil, says market is ‘nervous’ as Trump-Xi summit looms</p><p>The head of a mining company hoping to supply the EU with rare earths in two years’ time has said it is “paramount” to end China’s stranglehold on the supply of the raw materials used in everything from cars to wind turbines and military jets.</p><p>As Donald Trump and China’s president, Xi Jinping, prepare to meet on Thursday in their second summit of the year, Rafael Moreno