With the development of economy and the increase of disposable income, there is a growing demand for sports and sporting goods for a better life and the sports industry in many countries has maintained sustainable and rapid development, and its industrial scale is ever-increasing, too. At present, the annual output value of world sports industry is estimated over USD500 billion, growing at an impressive rate of about 20% ever year. Moreover, the proportion of American sports output value to its GDP has rise...