What sectors does Longfor Group operate in? What is the history of Longfor Group? What is the current credit rating for Longfor properties? What is longfor? What is Longfor's dividend yield? What awards has Longfor Group won? What are analysts' predictions for Longfor? Is Longfor a good long-term investment? Is Ford a good stock to buy long term? How volatile is Longfor's stock price? How does Longfor compare to other developers? Do investments really double every 7 years?