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Two kids heap salt up by the Qairhan Salt Lake in northwest China's Qinghai Province, Aug. 18, 2018. Abundant in mineral resources, Qairhan Salt Lake is a production base of potash fertilizer in China. (Xinhua/Zhang Long)
Two kids heap salt up by the Qairhan Salt Lake in northwest China's Qinghai Province, Aug. 18, 2018. Abundant in mineral resources, Qairhan Salt Lake is a production base of potash fertilizer in China. (Xinhua/Zhang Long)