What are the power of attorney for criminal cases at the trial stage?

Legal subjectivity:

In the trial stage of criminal cases, the lawyer's agency authority generally includes: consulting, extracting and copying files; Collect materials related to this case; Apply to the people's court to collect and obtain evidence; And apply to the people's court to notify the witness to testify in court.

Legal objectivity:

Article 37 of the Criminal Procedure Law of People's Republic of China (PRC) * * * Defender's duty is to put forward materials and opinions on the innocence, light crime or reduction or exemption of criminal responsibility of criminal suspects and defendants according to facts and laws, and safeguard the litigation rights and other legitimate rights and interests of criminal suspects and defendants. Article 40 of the Criminal Procedure Law of People's Republic of China (PRC) * * * Since the people's procuratorate examines and prosecutes the 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 43 of the Criminal Procedure Law of People's Republic of China (PRC) * * * Defence lawyers may, with the consent of witnesses or other relevant units and individuals, collect materials related to the case from them, apply to the people's procuratorate or the people's court to collect and obtain evidence, or apply to the people's court to notify witnesses to testify in court. With the permission of the people's procuratorate or the people's court, and with the consent of the victim or his close relatives or witnesses provided by the victim, the defense lawyer may collect materials related to the case from them.