The Chinese conglomerate Wuchan Zhongda Group, which is also involved in international trade, has launched an investigation due to the disappearance of a large batch of copper purchased in Russia. The conglomerate bought 2 thousand tons of refined copper (worth about $20 million) from the Russian Regional Metallurgical Company late last year, the goods were to be sold to a local trader for onward delivery to China. However, in the end, the cargo arrived in Turkey and in practice turned out to be much cheaper granite, sources said.