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东北轻合金加工厂用国产快速开关代替进口快速开关，不仅节约了大量外汇，保证了备件的及时供应，而且经济效益也很可观。
Northeast light alloy processing plant with domestic quick switch instead of imported fast switch, not only saves a lot of foreign exchange, to ensure the timely supply of spare parts, and economic benefits are also considerable.