日本对中国镁的依赖性在扩大炼铁要消耗大量的能源，为了减少能源输入，日本逐步关闭了国内的镁厂。８０年代，日本需要的铁以国产品为主，并从美国、加拿大、挪威进口一部分。然而，１９８９年古河铁业公司解体与日本重化工公司炼铁企业的转产。１９９４年１０月宇部兴产... Japan’s Dependence on China’s Magnesium In expanding iron-smelting to consume a large amount of energy, Japan gradually closed its domestic magnesium plant to reduce its energy input. In the 1980s, Japan needed iron-based products and imported some from the United States, Canada and Norway. However, the Furukawa Iron and Steel Company was dissolved in 1989 with the conversion of the iron and steel enterprises of Japan’s Heavy Chemical Industry Corporation. October 1994 Ube Hing production ...