The house purchase contract can be used as evidence for applying for a credit card.

1. There are two main conditions for credit card application:

1. Age requirement: between 18-60 years old;

2. Have a stable job and sources of income.

2. Materials and documents required when applying for a credit card:

1. Completely filled and signed application form;

2. Identity documents;

3. Income certification documents.

3. If you want to apply for a credit card with a relatively large limit, you need to provide proof of good financial strength, such as: a copy of the real estate certificate, a copy of the car driving license; a bank loan account (with good credit, no more than 60 days) or a copy of the deposit receipt, etc.