China's looming gallium export controls leave automakers with a dilemma over whether they can continue to rely on a metal which had been seen as a game changer for electric vehicles. Gallium is currently used in a wide variety of applications, from LEDs to smaller mobile phone adaptors. Little known to most people, gallium in pure form can melt in your hand - but in a couple of compounds has become sought after for semiconductors. Automakers are hungry for anything that boosts EV efficiency and reduces weight, helping them to cut costs. Gallium Nitride does both and is far cheaper...