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为了适应引进30万吨大化肥装置备件制造中部分产品以及我厂部分新产品型线复杂、精度高的要求,从1977年开始,我厂在
In order to adapt to the introduction of 300,000 tons of large chemical fertilizer plant spare parts in the manufacture of some products as well as some of my plant new product line complexity, high precision requirements, from 1977, I plant in