INVESTOR NOTICE: The Rosen Law Firm Announces Filing of Securities Class Action Against China Natural Gas, Inc. - CHNG China Natural Gas (MM) (NASDAQ:CHNG) Intraday Stock Chart Today : Wednesday 1 September 2010 The Rosen Law Firm today announced that a class action lawsuit has been filed on behalf of purchasers of China Natural Gas, Inc. (NASDAQ: CHNG) common stock during the period from March 10, 2010 through August 19, 2010.