You have to have a business partner in China to help you to get the Visa Notificate Letter which is issued by a duly authorized Chinese organization in China, namely, Ministries and Commissions of the State Council, the Government of all Provinces, Autonomous Regions, and Municipalities directly under the Central Government, and Foreign Affairs Offices and Bureaus of Economy and Commerce thereunder, and departments and units recognized by the Department of Consular Affairs of the Ministry of Foreign Affairs of the People's Republic of China, with a multiple entry visa notification may apply for multiple entry visas.