据报道:2003年,我国铜产量的60%以上、铝产量的48%、铅产量的30%、锌产量的20%是靠进口原料生产的。有色金属工业年耗能量约占全国能源消费总量的4.4%,占工业总耗能量的6%。资源、能源、环保问题已直接影响到有色金属工业的持续稳定发展-中国有色金属:如何破解“可持续”难题。 It is reported that in 2003, more than 60% of China’s copper output, 48% of aluminum output, 30% of lead output and 20% of zinc output were produced by imported raw materials. Non-ferrous metal industry annual energy consumption accounts for about 4.4% of the national total energy consumption, accounting for 6% of total industrial energy consumption. Resources, energy and environmental issues have a direct impact on the sustained and steady development of the nonferrous metals industry - China Nonferrous Metals: How to crack the “sustainable” problem.