What are the criteria for measuring the collection rate of effective material evidence in criminal cases?

1. Inquiry: Inquiry means that law enforcement agencies or lawyers ask the parties, witnesses or expert witnesses to state their understanding of the case. Inquiry is a measure and method of obtaining evidence that is often used in any case.

2. Identification: Identification requires the victim or witness to choose what he sees and hears from many similar objects, places or people. The subject of identification can be the victim and witness in the case, and the object of identification can be the criminal suspect in the case or the person who has some connection with the case, or the articles or places related to the case.

3. Inspection: Inspection refers to a special activity in which law enforcement officers come to the scene to find and extract evidence. The subject of inspection is limited to law enforcement agencies, and lawyers have no right to conduct inspections. From the perspective of collecting evidence, on the one hand, the inquest is an important way to find and extract all kinds of physical evidence, on the other hand, the inquest record itself is also one of the types of evidence.

4. Inspection: Inspection refers to the special activities of law enforcement agencies to inspect the personnel related to the case according to law. The object of examination is the body of the living, also called physical examination. Personal inspection record is its main form of evidence.

5. Search: Search refers to the special activities of law enforcement agencies to conduct compulsory search, search and extract evidence materials from places or personnel related to the case according to their functions and powers. The search object can be a place, a person, a car, a boat and other objects. Search is an important way to find and extract all kinds of physical evidence and documentary evidence, and the search record itself is one of the types of evidence.

6. Experiment: Experiment refers to the special activities of law enforcement agencies to simulate and reproduce the crime scene, criminal process or case process, which is mainly applicable to criminal cases. In other kinds of cases, it may be necessary to use this reproducible experimental method to find out the cause of the accident or verify the statements of the parties or witnesses.

7. Appraisal: Appraisal refers to the activities that specialized agencies or personnel use their professional technical knowledge and scientific and technological equipment to test related special issues and make appraisal conclusions.