The difference between defense lawyers and non-defenders: Defense lawyers can consult, excerpt, and copy case files; during criminal proceedings, they can collect evidence of minor or innocent crimes for criminal suspects and defendants in accordance with the law; non-defenders Defenders generally cannot participate in criminal proceedings and have no rights or obligations to defend criminal suspects or defendants.
Legal basis:
Article 43 of the Criminal Procedure Law of the People's Republic of China
With the consent of the witness or other relevant units and individuals, the defense lawyer may To collect materials related to the case from them, you can apply to the People's Procuratorate or the People's Court to collect and obtain evidence, or you can apply to the People's Court to notify witnesses to appear in court to testify.
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 the witnesses provided by the victim, the defense lawyer may collect materials related to the case from them.