1. Contact the developer or real estate trading center: You can contact the developer or real estate trading center to ask about the purchase contract number.
2. Inquiring about house ownership information: You can bring your valid ID card to the local real estate registration center to inquire about house ownership information, including the purchase contract number.
3. Consult the provident fund management center: You can consult the local provident fund management center, and they can check the purchase contract number for you according to your personal information and purchase situation.
When withdrawing the provident fund, you need to provide the purchase contract, purchase invoice, ID card, bank card and other related materials. If you can't find the purchase contract number, you can provide other relevant supporting materials. For specific requirements, please consult the local provident fund management center.