According to the relevant information, the requirements shall be signed by the buyer and the seller, the housing security department of the municipality directly under the central government and the people's government at the city or county level. The applicant shall submit application materials in accordance with the provisions of the housing security department of the people's government at the city or county level, and be responsible for the authenticity of the application materials. The applicant shall agree in writing to the competent department of housing security of the people's government at the city or county level to verify the application information.