Recently the global economic continuous development, and the international trade is prosperous , the cash flow and capital is frequently flowing among Industry and country ,how to effectively control ,analyze and manage the cash flow ,which have become an important task . One side , it can sustain development of company ,other side it not only can help us analyze the activity of cash flow ,but it is an important complement for accounting report. So we select the listed companies in highway field , and use the statistic and econometrics skills to analyze the relationship in cash flow activity, at same time we prepare to analyze the relationship among cash flow and capital, revenue, and so on. At last the research will direct us to use the economic resource effectively. |