I want to go to guangzhou to attend canton fair for business purpose

Rizawan, you need to get an M type in advance. The following papers will be required: a valid passport, a photocopy of the passport's data page, a filled-out application form, a recent passport style photo, a personal statement, and an invitation letter from your trade partner or the fair hosting party. If you apply from Saudi Arabia, you also need to submit the original and photocopy of your residence permit there.