Investigators who take investigation measures such as interrogation, inquiry, lien, search, transfer, seizure, seizure and inspection shall produce their certificates and issue a written notice in accordance with the regulations, which shall be conducted by two or more people to form written materials such as transcripts and reports, and shall be signed and sealed by the relevant personnel. Investigators shall record and video the whole process of interrogation, search, seizure and other important evidence collection, and keep them for future reference.