Requirements for tourist visa:
1. Valid passport (at least six months before expiration) with blank visa pages and copy of the first three pages;
2. TYPED Visa Application Form with one passport photo.
3. Applicants who have never been to China before should submit in person.
4. Invitation letters in Chinese language by individual/entity in China and six-month bank statement

how can i get invitation letters in china language ,whene i never been to china before ?

you can contact with some agents ,they will get a invitation letter for you

what kind of agent i need for invitation,and where i gonna find them.