According to Zhao Fa's inquiry. When applying for judicial expertise, the court will usually give the appraisal result within 30 days. If the appraisal involves complex, difficult and special technical problems or the appraisal process takes a long time, the time to complete the appraisal may be extended, and the extension time shall generally not exceed 30 working days. Where there is another agreement between the judicial authentication institution and the client on the time limit for authentication, such agreement shall prevail.