FILE - In this May 16, 2013 file photo, Chinese demonstrators hold banners as they participate in a protest against a planned refinery project in downtown Kunming, in southwestern China

 

              FILE - In this May 16, 2013 file photo, Chinese demonstrators hold banners as they participate in a protest against a planned refinery project in downtown Kunming, in southwestern China
FILE - In this May 16, 2013 file photo, Chinese demonstrators hold banners as they participate in a protest against a planned refinery project in downtown Kunming, in southwestern China's Yunnan province. Officials in the southwest Chinese city decided to make an environmental assessment of a planned refinery public following protests by residents over pollution fears, state media reported Sunday, June 2, 2013. The placards read: "No to Kunming PX (paraxylene)." (AP Photo/Aritz Parra, File)