Do my 2 British & 1 Australian bosses need china visa for multiple business trip?

The following documents are needed :
1. Original passport with blank visa pages and validity of more than 6 months;
2. UAE resident visa valid for more than 6 months. (Excluding GCC applicants);
3. Application Form which must be completed neatly and signed by the applicant;
4. One passport photo (and the photos of the applicant's accompanying persons included in his/her passport if they plan to travel with the applicant.);
5. Copies of the data pages of the applicant's passport and UAE resident visa.
6. A No-objection letter from the applicant's company;
7. An invitation from CHINA with a copy of the inviter's license.

It would not be hard for your bosses to get a multi-entry visa valid for 6 month or 1 year. Just have a try!