Dispute over a guarantee contract between Anhui-based Jiangbei New City Construction Development Co., Ltd, Hefei-based Xingdong Electrical Switch Co., Ltd, Zhejiang Timeshine Conglome Co.Ltd, Anhui-based Qunyu Enterprise Management Co., Ltd, Wuhu-based Taiping Mining Co., Ltd and Anhui-based Yongtai Enterprise Management Consulting Co., Ltd