Legal basis: Criminal Procedure Law of People's Republic of China (PRC).
Article 40 From the date when the people's procuratorate examines and prosecutes a case, the defense lawyer may consult, extract and copy the case file. Other defenders may also consult, extract and copy the above materials with the permission of the people's court or the people's procuratorate.
Article 41 Defenders who believe that the evidence materials collected by public security organs and people's procuratorates to prove the innocence or minor crimes of criminal suspects and defendants have not been submitted have the right to apply to the people's procuratorates and people's courts for retrieval.
Article 42 The evidence collected by the defender that the criminal suspect is not at the scene of the crime, has not reached the age of criminal responsibility, and belongs to a mental patient who is not criminally responsible according to law, shall promptly inform the public security organ and the people's procuratorate.