Why does Alipay have the cost of a PetroChina Kunlun fuel card?

Yes, because Alipay and China Petroleum jointly launched the oil card recharge function.

In other words, China Petroleum Kunlun Fuel Card can be recharged with Alipay. Users can use the refueling service as long as they log in to Alipay. For the first time, the owner can enter his own refueling card number according to the prompt and bind it with Alipay account. After binding, they can directly recharge the fuel card by entering the recharge amount. When refueling, put the fuel card in the top-up machine of the gas station, then you can insert the card to refuel, and you can insert the card directly when refueling. If users need to collect invoices, they can directly show their cards and issue them at the sales outlets of China petroleum cards.