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A visitor inquires about an impulse sealer at the 123rd Session of China Import and Export Fair (Canton Fair) held in Guangzhou, capital of south China's Guangdong Province, April 15, 2018. (Xinhua/Lu Hanxin)
A visitor inquires about an impulse sealer at the 123rd Session of China Import and Export Fair (Canton Fair) held in Guangzhou, capital of south China's Guangdong Province, April 15, 2018. (Xinhua/Lu Hanxin)