日本的铝工业,特别是铝电解工业由于在世界铝行业中电费最贵、铝锭成本高,因而失去国际竞争能力,进口铝锭大量增加,国内铝厂近年来频频停产、关闭。加之世界性铝需求不振,产品过剩,致使日本自1978至1983年,已四次大幅度削减冶炼设备生产能 In Japan, the aluminum industry, especially the aluminum electrolysis industry, has lost its international competitiveness due to the most expensive electricity in the world aluminum industry and the high cost of aluminum ingots. The imported aluminum ingot has increased substantially and domestic aluminum plants have been discontinued and shut down frequently in recent years. Coupled with the sluggish global aluminum demand and excess product, Japan has drastically cut its production capacity of smelting equipment four times since 1978 to 1983