开发这块小程序支付可以单独对使用某个银行卡进行优惠支付么？

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开发这块小程序支付可以单独对使用某个银行卡进行优惠支付么？Can the development of this small program pay for preferential payment with a certain bank card alone?

Development of this small program payment can be used to use a bank card for preferential payment? If you want to cooperate with the bank, the user will bind the bank's card on wechat, and then when making payment in the small program, you can choose this bank card and make preferential payment. For example, if you choose normal 100, you will get 80 If you choose this bank card

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