The confidentiality qualification of research and production units of weapons and equipment, that is, the confidentiality qualification of research and production units of weapons and equipment, refers to the examination and certification of research and production units of weapons and equipment in accordance with the Law of People's Republic of China (PRC) on Guarding State Secrets, the Measures for the Administration of Examination and Certification of Confidentiality Qualification of Research and Production Units of Weapons and Equipment and related confidentiality provisions, and obtains corresponding confidentiality qualification. The confidentiality qualification of scientific research and production units of weapons and equipment is divided into grade one, grade two and grade three. In order to ensure the security of state secrets, according to the Law of People's Republic of China (PRC) on Guarding State Secrets, the Measures for the Administration of Examination and Certification of Confidential Qualification of Scientific Research and Production Units of Weapons and Equipment and relevant confidentiality provisions, enterprises and institutions undertaking the task of scientific research and production of classified weapons and equipment shall implement the system of examination and certification of confidential qualifications. Those who undertake the task of scientific research and production of classified weapons and equipment shall obtain corresponding confidentiality qualifications. The confidentiality qualification examination and certification of scientific research and production units of weapons and equipment adheres to the principles of strict standards, strict procedures, highlighting key points, fairness and justice.