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Caption:A screen that shows the Shanghai Composite Index (top) and the Shenzhen Component Index is seen on the side of an overpass in front of the Shanghai World Financial Center (L), Jin Mao Tower (C) and Shanghai Tower in Shanghai on July 9, 2015. Chinese stocks stormed into positive territory in volatile trading on July 9 as Beijing launched new measures to halt a dramatic sell-off, but trading remained volatile in a crisis that has also hurt global share markets and commodity prices. AFP PHOTO CHINA OUT (Photo credit should read STR/AFP/Getty Images)
Caption:A screen that shows the Shanghai Composite Index (top) and the Shenzhen Component Index is seen on the side of an overpass in front of the Shanghai World Financial Center (L), Jin Mao Tower (C) and Shanghai Tower in Shanghai on July 9, 2015. Chinese stocks stormed into positive territory in volatile trading on July 9 as Beijing launched new measures to halt a dramatic sell-off, but trading remained volatile in a crisis that has also hurt global share markets and commodity prices. AFP PHOTO CHINA OUT (Photo credit should read STR/AFP/Getty Images)

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