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A Chinese pharmaceutical expert has urged further testing of U.S. swimmers' samples to investigate facial discoloration at the Paris Olympics, suggesting that the substance ITPP be specifically analyzed to ensure fair competition. BEIJING, Aug. 19 (

Photovoltaic solar energy sources produced 4,791 gigawatt-hours (GWh) of electricity in June, representing 22.2 percent of the country's total mix. BARCELONA, Spain, July 22 (Xinhua) -- In June, for a second consecutive month, photovoltaic solar pow