Jiayuan Cobalt Holdings Limited is a multinational company invested by Macrolink Group and Hongkong Goldwei Group Ltd., which mainly engaged in nonferrous metal resources development,smelting and pressing,international trade and investment. The company has nine subsidiaries,including five smelting and processing enterprises. The company currently has more than thirty mineral rights, and the ores of which mainly include copper, cobalt, tantalum, niobium, tungsten, tin, etc. The three smelting enterprises in China are located in Qingyuan City, Guangdong Province, which are neighboring the Pearl...