I am a Ugandan national , How can i get a chines multiple entry visa for business valid for one year

Frankly speaking, if you don't have a business parter in China, such as a company, supplier or factory, which can get the Invitation Letter of A Duly Authorized Unit issued by Foreign Affairs Office, or Bureau of Economic Cooperation and Foreign Trade, it is impossible for you to get a 1 year multiple entry business visa with 30 days stay duration per entry. The visa rule for Ugandan nationals is very strict.