Chinalco, China's largest aluminium producer, rallied 9.1 per cent to HK$9.49 while the country's leading copper company, Jiangxi Copper, rose 7.5 per cent to HK$19.80.

中国最大的铝生产商中国铝业(Chinalco)劲升9.1%，至9.49港元，同时中国领先的铜业公司江西铜业(Jiangxi Copper)升7.5%，至19.80港元。

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The Shanghai stock market halved its gains to end up 1.17 percent, a four-week closing high, while copper futures rose in Shanghai and London.

上海股票市场平均收益率增加了1.17个百分点，创四周以来最高，同时伦敦和上海期货铜价格也在上涨。

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Corn and wheat prices rose around 50 percent last year; copper, cotton and rubber prices have been setting new records.

玉米和小麦的价格比去年上涨近50%；铜材、棉花和橡胶的价格不断创造历史新高。

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Copper imports rose to a four-month high, while purchases of iron ore were the biggest since January 2011.

BBC: Woman working in Chinese factory

The copper net-short position for the managed-money accounts rose to 2, 649 contracts as they cut gross longs and increased gross shorts.

FORBES: FOCUS: Gold, Silver, Palladium See Net Bullish Positions Rise -- CFTC

The copper net-long position for the managed-money accounts rose fell to 23, 448 contracts, as they cut more gross longs than gross shorts.

FORBES: Funds' Bullish Positions In U.S. Precious Metals Futures, Options Continue To Grow -- CFTC