It depends on whose credit card it is and where the gas was filled.
The major credit card points malls offer a wide range of gifts. Hard currency is the first choice for redeeming points. For car owners, the most worthwhile redemption is of course gas recharge cards. The chart below tells you which bank credit cards can be redeemed for Sinopec PetroChina gas cards. Although the exchange ratios are different, the most important thing is that you can use points to exchange for something that is truly useful to you.
1. Ping An Bank
2. China Construction Bank
3. Shanghai Pudong Development Bank
4. Industrial Bank