Legal analysis: the file of judicial organ's examination and prosecution is confidential. Generally speaking, the law does not allow criminal suspects to read the file materials, and criminal files are confidential. Institutions such as the Public Prosecution Law will not provide all materials according to the case file. In the investigation stage, lawyers can't consult the materials in the public security organs, only when they are transferred to the procuratorate.
Legal basis: Article 10 of the Law of People's Republic of China (PRC) on Guarding State Secrets, the specific scope of state secrets and their classification shall be stipulated by the state secrecy department in conjunction with foreign affairs, public security, national security and other relevant central departments. The specific scope of national defense secrets and their classification shall be stipulated by the Central Military Commission (CMC).