In this undated photo, chunks of chemically processed rare earths are shown in Beijing. China's recent halt of exotic metal shipments to Japan amid a diplomatic spat has reverberated throughout the world's high-tech manufacturing hubs _ now on heightened alert to the risks of relying on one country for materials that do everything from helping hybrid engines run to creating the color red in televisions. (AP Photo/Kyodo News)

In this undated photo, chunks of chemically processed rare earths are shown in Beijing. China's recent halt of exotic metal shipments to Japan amid a diplomatic spat has reverberated throughout the world's high-tech manufacturing hubs _ now on heightened alert to the risks of relying on one country for materials that do everything from helping hybrid engines run to creating the color red in televisions. (AP Photo/Kyodo News)