Under normal circumstances, the utility model patent can be authorized within 4-6 months from the date of application. After authorization, you need to pay the authorization registration fee and annual fee. After payment, you can get the certificate in about 3 months.
If there is something wrong with the application documents, it needs to be corrected, and the correction time is generally 2 months. After you submit it, if there are no problems, you can authorize it soon. If there is a problem, you may have to make it up again. The exact time is hard to say. But you should be able to get the certificate within one year.