It's hard to say. It will be finished in two or three days if it is fast, and it may take a week if it is slow.

Take Huawei Education as an example, the preferential review is generally about half a month. Because of Huawei Education, the conditions for his audit are relatively high, and it is generally necessary to conduct an inspection or a friend's visit after the audit. So his time will be longer, which basically means that he can complete the review in about a week or half a month.