Hangzhou ISO14000 certification an advantage, establish a corporate image, increase their visibility. 2, encourage enterprises to consciously abide by environmental laws and regulations. 3, prompting businesses to consider their impact on the environment in their production and business activities, reduce environmental load. 4, to enable enterprises to gain access to the international market, "Green Passport" 5, to enhance environmental awareness 6 employees, encourage enterprises to save energy, recycling waste, reducing operating costs. 7, enables companies to strengthen environmental management