(a) apply to the people's procuratorate, the people's court to collect and retrieve evidence;
(b) apply to the people's court to notify the witnesses to appear in court to testify;
(c) with the consent of the witnesses or other relevant units and individuals they collect materials.
Legal basis
Article 40 of the Criminal Procedure Law
Defense attorneys, from the date of the people's procuratorate's examination and prosecution of the case, may inspect, excerpt, and copy the materials in the case file. Other defenders, with the permission of the people's court or people's procuratorate, may also inspect, excerpt or copy the said materials.
Article 41 of the Criminal Procedure Law
If the defender believes that the evidentiary materials collected by the public security organ or the people's procuratorate during the investigation, examination and prosecution to prove the innocence or misdemeanor of the suspect or defendant have not been submitted, he or she shall have the right to apply to the people's procuratorate or the people's court for retrieval of the materials.
Article 43 of the Criminal Procedure Law
Defense counsel, with the consent of the witnesses or other relevant units and individuals, may collect from them materials relevant to the case, and may also apply to the people's procuratorate or people's court to collect or retrieve evidence, or apply to the people's court to notify the witnesses to appear in court to testify.
Defense lawyers, 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, may collect from them materials related to the case.