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The Chinese firm that can build a skyscraper in a matter of weeks

The Chinese firm that can build a skyscraper in a matter of weeks

CNN - By Eoghan Macguire, CNN

(CNN) — At the beginning of February, construction workers gathered at a sparse building site in the city of Changsha, south-central China. A little under three weeks later, a 57-story skyscraper stood on the very same the spot. The "Mini Sky City" tower is the work of Broad Sustainable Building, a …

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