一、有色金属产品进出口 贸易发展状况分析 80年代以来,我国有色金属进出口贸易可分为三个阶段。第一阶段,从1981年到1985年五年期间,中国经济体制改革开放起步,国家统制有色外贸,铜、铝、铅、锌等主要金属均生产不足,国内市场供应短缺,在较大程度上依赖进口。第二阶段从1986年到1989年四年,有色金属工业发展 First, non-ferrous metal products import and export trade development analysis Since the 1980s, China’s non-ferrous metals import and export trade can be divided into three stages. In the first stage, from 1981 to 1985, China’s economy started its reform and opening up process and the state controlled non-ferrous foreign trade. The production of major metals such as copper, aluminum, lead and zinc was insufficient and the domestic market was in short supply. To a large extent, Dependent on imports. The second phase from 1986 to 1989, four years, non-ferrous metal industry development