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Workers clean glass curtain wall of skyscraper in Zhengzhou, China's Henan

Source: Xinhua| 2019-05-03 14:40:13|Editor: mingmei
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CHINA-ZHENGZHOU-SKYSCRAPER EXTERIOR CLEANERS (CN)

Workers clean the glass curtain wall of a skyscraper in Zhengzhou, capital of central China's Henan Province, May 2, 2019. (Xinhua/Feng Dapeng)

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