Debt-credit dispute between Shenzhen-based Yifengyuan Industrial Co, Ltd, Gansu-based North Electric Power Engineering Co, Ltd, Cheng Qingbo, Jiangsu-based Yalun Group Co, Ltd, Qinghai-based Zhongjin Venture Capital Co, Ltd, Tianjin-based Guoheng Railway Holding Co, Ltd, China Huayang Economic and Trade Group Co, Ltd, Shenzhen-based Zhongji Industrial Group Co, Ltd, Jilin-based Chengcheng Group Co, Ltd, Guizhou-based Yangyang Mining Investment Co, Ltd and Hubei-based Power Co, Ltd