云南冶炼厂依靠技术进步,走自我改造、自我发展的道路,固定资产原值翻番,产能成倍增长,各项技术经济指标大幅度提高,获取巨大经济效益与社会效益。 Yunnan smelter relies on technological progress and takes the path of self-improvement and self-development. The original value of fixed assets doubled and its production capacity doubled. All technical and economic indicators have been greatly improved and huge economic and social benefits have been obtained.