2. Consult the developer or intermediary company: property buyers can also consult the developer or intermediary company to find out whether the house they bought has been signed online. Developers or intermediary companies will provide relevant supporting materials to confirm whether the house has been signed online.
3. Check the real estate license: Buyers can bring the real estate license to the real estate registration center or the service hall of real estate development enterprises to check whether the purchased house has been signed online. The staff will provide the corresponding certificates for the buyers according to the information on the real estate license.