cost audit of credit card product design and marketing, cost audit of credit card risk management and cost audit of credit card service.

1. Audit of the design and marketing cost of credit card products: The audit includes the design cost of credit card products, advertising expenses, channel expenses, sales staff salaries, promotion expenses, etc., as well as the measures and effects of cost reduction.

2. Cost audit of credit card risk management: The audit includes credit card granting, post-loan management, collection, credit inquiry and other expenses, as well as risk control measures and effects.

3. Credit card service cost audit: The audit includes credit card customer service, card making, sending, bill printing, SMS notification, online banking and other service costs, as well as service quality and efficiency.