In criminal cases, the police have made a decision not to file a case, but lawyers are not allowed to copy the relevant transcripts they have made. Is there any law to prove that it can be copied?

Criminal procedure law:

Article 38 From the date of examination and prosecution by the People's Procuratorate, defense lawyers may consult, extract and copy the case files. Other defenders may also consult, extract and copy the above materials with the permission of the people's court or the people's procuratorate.