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1998年,进口关税降低,原材料涨价,洪涝灾害冲击……大庆石化总厂炼油厂却跃出谷底,秘密何在?
In 1998, import tariffs to reduce the price of raw materials, floods and floods shock ... ... Daqing Petrochemical Plant refinery has jumped to the bottom, what is the secret?