As a PPP project company specializing in the treatment of kitchen waster in east Zhengzhou, Zhengzhou Clean & Environmental-friendly Technology Co., Ltd. was set up after Zhengzhou Qiaolian Bio-energy Co., Ltd. and Jiangsu Clean Environmental Technology Co., Ltd. jointly won the bid for the kitchen waste treatment project in east Zhengzhou in September 2013. Zhengzhou City Administration Bureau signed a 20-year concession agreement with Zhengzhou Clean & Environmental-friendly Technology Co., Ltd., in which it was agreed that the latter would dispose daily of 300 tons of kitchen waste and 50 tons of gutter oil collected from part of Jinshui District, Guancheng District, Zhengdong New Area, Zhengzhou Airport Comprehensive Economic Experimental Zone, and National Zhengzhou Economic and Technological Development Zone.