The identification mentioned in the real estate registration refers to: 1. If it is an individual, provide a copy of identification. 2. If it is an enterprise, provide a copy of the industrial and commercial business license, the certificate of the legal representative or person in charge and a copy of the identity certificate. 3. If it is a public institution or other mass organization, provide a copy of the government approval document, or the approval and registration certificate of the legal representative or person in charge of the unit. 4 is a state organ, provide proof of the legal representative or the person in charge of the unit. 5. If the unit entrusts others to act as an agent, it shall provide a copy of the power of attorney and the personal identity certificate of the entrusted agent. 6. If an individual entrusts another person to act as an agent, a notarized power of attorney and a copy of the personal identity certificate of the entrusted agent shall be provided. 7. The identity certificates submitted by overseas enterprises or organizations shall be witnessed or certified as required, and those in Hong Kong and Macao shall be witnessed by lawyers authorized by the Ministry of Justice.