As far as I know, this card has a 5% discount at the designated gas station, and each card is limited to purchase twice a month. See the picture for details.
There is also a car wash service in the designated car wash shop 10 yuan (limited to cars with less than 5 seats, and other models make up the difference), and each card is limited to 2 times a month. For details, please refer to the picture of the owner of Hami car wash shop.
Finally, the landlord can check other preferential merchants-card discount-preferential merchants/preferential activities through the CCB credit card website. See the picture for details.