2000 yuan to 20000 yuan. The first credit card limit of the Postal Savings Bank is between 2,000 yuan and 20,000 yuan, and different card types have different credit limits, such as 2,000 yuan to 5,000 yuan and 10000 yuan to 50,000 yuan. Postal savings credit card is a RMB credit card, which is a UnionPay standard card. It has all the functions and services of UnionPay standard credit card and can be used freely at home and abroad. This card is valid for three years.