In the recent years, the sixth Merger & Acquisition (hereinafter M&A) tide which commenced in the U.S. rapidly sweeps the whole world, and nowadays M&A has already become a hot topic of discussion in the world economics. As everything has the dual nature, on the one hand M&A helps enterprises to enlarge the scale of production and operation, enhance the market competitive strength within a short time, on the other hand it inevitably expands the market shares of the involved enterprises, enhances the...