Legal analysis: The judicial technicians of the People's Court shall review the appraisal time of the entrusted case and the qualifications and capabilities of the appraisal agency. If the time of signing and the time of suspicion exceed six months, the unit submitting the case must be required to provide The comparison sample cannot use the self-prepared sample of the identification institution to document the identification time. Because the differences in paper, ink, and storage environment between the test materials and samples will have a decisive impact on the identification results. The identification of the time when handwriting was formed is one of the more difficult identifications. As far as I know, there are less than five companies in Beijing that can do this kind of identification, and the requirements for identification are very strict. The identification of the time when handwriting was formed is not perfect at this stage. At present, in the process of hearing cases, if the court encounters a party applying for identification of the time when handwriting was formed, it will generally not be allowed because the identification agency does not have the ability to perform such identification. In other words, in judicial practice, court trials will not support the identification of the time when handwriting was formed. From another level, if one of the parties does not go through the court, but goes to an appraisal agency on his own and makes an appraisal of the time when the handwriting was formed, the court will not base the case solely on the appraisal results. Of course, if there is other evidence that can match the appraisal results and prove that the actual signature date is inconsistent with the displayed date, that is another matter. One more thing to add, even if some institutions can do handwriting formation time identification, they are usually for more than two years apart. If it is only a few months apart, there should be no formal appraisal agency that can do the formation time appraisal.

Legal basis: "General Principles of Forensic Identification Procedures" Article 27 The judicial authenticator shall record and sign the identification process in real time. Recording can take the form of notes, audio recording, video recording, taking photos, etc. Records should indicate the main identification methods and processes, inspection, inspection, and testing results, as well as the use of instruments and equipment, etc. The recorded content should be true, objective, accurate, complete and clear, and the recorded text materials, audio and video materials, etc. should be stored in appraisal files.