China Building Science Conference and Green Intelligent Building Expo held in Tianjin
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E-mail Xinhua, June 25, 2021
Photo taken on June 24, 2021 shows an external view of the national convention and exhibition center in Tianjin, north China. Tianjin holds the first Green Intelligent Building Expo from June 24 to 27, with a focus on new materials, latest technologies, new equipment, and new energy in the building industry. [Photo by Li Ran/Xinhua]
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