I have travelled on a business visa to China and I need to get another entry permit.

Musab, what is your purpose for your second visit? Travel? If so, you should apply for a L type. Apart from your passport, application form and passport photo, you should prepare the following documents:
1. A letter from the local travel agency or other travel organizer.
3、“Invitation Letter for Tourist” from Chinese Tourist Bureau.
2、Travel itinerary
3、Company covering letter for each member（if applicable）
4、Less than three pages of the copy of Financial support document or copy latest month personal bank statement(please bring the latest 3 months original one)

It takes four working days to deal with your application.