hangzhou water treatment technology development center had five patents approved in the first half of the year, including two patents for invention. as of july, the center has applied for 17 patents, including eight for invention, over-fulfilling the annual requirement. at present, the center has been approved for 65 patents. it has applied for 150 patents. it has always paid special attention to intellectual property management and has formulated a sound management system. its patent efforts have been awarded by chemchina and bluestar multiple times.