摘 要: | The Baiyin NonferrousMetals Company datesback to the 1950's and isnow one of the country'smost important economiccontributors. In 1960 constructionof its copper-sulfur productionsystem was completed and putinto operation. For the next 18years, Baiyin led the country inoutput value, level of profits andtax payments, and made activecontributions to China's economic
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