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东营方圆自主创新、自主研发、具有世界水平的无碳熔炼氧气底吹炉炼铜法,填补了世界炼铜的空白,是世界炼铜史上一大飞跃。
Dongying radius of independent innovation, independent research and development, with world-class carbon-free smelting oxygen blowing furnace copper refining method, to fill the gap in world copper, is a great leap in the history of the world copper.