Research on personal information protection in criminal investigation 并列题名:Research on personal information protection in criminal investigation Jurisprudence on personal information protection in technical investigation 并列题名:Jurisprudence on personal information protection in technical investigation Research on personal information protection practice of insurance companies 并列题名:Research on personal information protection practice of insurance companies Research on regulation of big-data criminal investigation Research on legality of the private criminal investigation Interrogation process in criminal investigation Research on personal information of privacy nature