Air China Zhiyin Bank of China Credit Card Rating: convenient payment, smooth consumption feedback and travel, and total score: Air China Zhiyin Bank of China Credit Card is Puka, only VISA version. This is a mileage card, and the mileage conversion ratio is 12: 1. It is recommended that Air China Zhiyin Bank of China Credit Card be used to brush the usual points, and it is not recommended to be used for Haitao. BOC Platinum Credit Card Elite Edition score: convenient payment, good consumer feedback and smooth travel. You can apply for this platinum credit card with a total score of 2, yuan from Bank of China or deposit it regularly for three months, and you can avoid the annual fee for five years. This is an air mileage card, featuring permanent double points. You can accumulate points of China Southern Airlines at 1: 1 or Air China at 9: 1, but the disadvantage is that there are no points in online shopping.