Chinese construction firm erects 57-storey skyscraper in 19 days
Chinese construction firm erects 57-storey skyscraper in 19 days13 Apr 2018

Broad Sustainable Building, a prefab construction firm, put up the rectangular, glass and steel Mini Sky City in the Hunan provincial capital of Changsha, assembling three floors a day using a modular method, the vice-president, Xiao Changgeng, said. More...