Copper prices, which reached record highs last week, fell back on Wednesday after China's State Reserve Bureau failed to sell all of the metal it put up for auction this week.
Copper prices, which reached record highs last week, fell back on Wednesday after China's State Reserve Bureau failed to sell all of the metal it put up for auction this week.
上周创下历史新高的铜价周三回落，之前中国国家物资储备局未能在本周的拍卖会上出售全部的铜。