Mr. Yazir, you can apply an F visa, but you must provide the invitation Letter or the visa notarization letter form authorized companies in China. Or you may apply for an L visa instead. The basic requirements for an L visa is as follows:
A. One completed visa application form;
B. One recent passport sized photo;
C. A valid original passport with blank pages;
D. Travel information including the booking of airline ticket and itinerary in China.