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1980年有关资料报道:日本1973—1975年因石油危机导致金属成形工业增长速度下降,1981年又因世界性商业倒退而使增长缓慢,1983年开始明显恢复,日本金属成形工业将有希望快速复元。由于粉末冶金产品和磁性材料主要用于汽车和
1980 Relevant information reported: Japan 1973-1975 due to the oil crisis led to the decline in the rate of growth of the metal forming industry, in 1981 due to the global business retrogression slow growth in 1983 marked the beginning of recovery, the Japanese metal forming industry will have the hope of rapid recovery . As the powder metallurgy products and magnetic materials are mainly used in automobiles and automobiles