LD-4000A portable interrogation CD-ROM recording system is a professional equipment used by the procuratorial authorities to interrogate criminal suspects in the course of the whole process of simultaneous audio-visual recording, in the process of moving cases to fix audio-visual evidence. It fully conforms to the technical requirements stipulated in the Supreme People's Procuratorate's "On the conduct of simultaneous audio and video recordings on the conduct of the interrogation of criminal suspects in their posts".
