BEIJING, Jan 16 (Reuters) – China’s Tongling Nonferrous Metals Group restarted its Jinguan Copper smelting unit on Monday after a brief shutdown for repairs, company source said. The unit, with production capacity of 400,000 tpy of copper, was closed for three days from Friday due to equipment breakdown. „The fault was not big,“ source added. * Tongling Nonferrous, one of China’s biggest copper smelters, which is based in the eastern Anhui province, did not immediately respond to request for comment. The most-traded copper contract on the Shanghai Futures Exchange was down 0.1 pct at 54,810 yuan ($8,527.42) per tonne by mid-session interval on Tuesday. ($1 = 6.4275 Chinese yuan)