Over the past year, waves of Chinese companies (28 in total) have been delisted from U.S. stock exchanges. Since 2011, the total market value of the delisted and about to be delisted Chinese companies has amounted to US$7.8 billion. That compares to US$2.2 billion for IPOs that Chinese companies have issued in the U.S. market. The large number of delisted companies has also had an effect on other Chinese companies that are planning to go public in the U.S. The reasons for the delistings include a stock price that is too low, back door listings (such as reverse takeovers or reverse mergers), and fraudulent accounting practices. The fraudulent accounting practices are the most common reason for delisting.
Source: China Review News, January 24, 2012