Job Recruitment Website - Property management - Should the property or the owner leave the proof form of the house?

Should the property or the owner leave the proof form of the house?

According to relevant information, the proof form of the house was left by the owner. Because it is understood that three books, one certificate and one form are kept by real estate developers and all of them are handed over to the owners after signing. These three documents are all evidence that the real estate has been certified by the relevant state departments after acceptance, and they are one of the necessary conditions for real estate developers to hand over the house.