1. Evidence investigation is that the parties to a civil case accept the entrustment, investigate and collect relevant litigation and non-litigation evidence in a planned way according to the principle of "whoever claims and gives evidence" in the Civil Procedure Law and Several Provisions on Evidence in Civil Procedure.
2, intellectual property investigation and investigate cases of infringement of intellectual property rights such as trademark rights, patents, copyrights and trade secrets. Assist in finding out the source of pirated books, audio-visual products and software, investigate the production dens of fake and shoddy products, obtain corresponding evidence, crack down on fake and shoddy products and protect intellectual property rights.
3. The investigation on the whereabouts of the property of the person subjected to execution is entrusted to assist the creditor to find the missing enterprise and the escaped debtor according to the Provisions of the Supreme People's Court on Several Issues concerning the Execution of People's Courts. Assist the court in investigating, executing and tracing the property and accounts hidden or transferred by the person subjected to execution, and safeguard the legitimate rights and interests of creditors.
Legal basis: Article 43 of the Criminal Procedure Law of People's Republic of China (PRC). With the consent of witnesses or other relevant units and individuals, defense lawyers may collect materials related to the case from them. 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.