A Chinese employee of a Japanese trading company operating in China has been detained by the country's authorities on suspicion of leaking information related to rare metals, sources familiar with bilateral relations said Sunday.A Chinese worker responsible for rare metals at a state-owned firm has also been detained, the sources said, as the Communist-led government has been stepping up export controls on the materials essential for cutting-edge technologies.The two Chinese individuals were detained in March, the sources said. The allegations against them have not been disclosed.The Japane…READ FULL ARTICLE