I like to visit Shanghai for 7 days. I am working in Dubai. So inform me what is the requirement?

You need following documents:
1. Original passport with blank visa pages and validity of more than 6 months;
2. UAE resident visa valid for more than 6 months;
3. Application Form and Supplementary Application Form;
4. One passport photo;
5. Copies of the data pages of assport and UAE resident visa.
If for business purpose, you need further a No-objection letter from your company; and an invitation from CHINA with a copy of the inviter's license.