Credit card. Okay credit cards sell explicit functions, and people who want to do them will naturally do it; Insurance, on the other hand, is a hidden function, selling an idea, which requires you to have strong communication and persuasion skills to get through the needs of customers. It is difficult to promote, so credit card sales are good. Any special card that can provide a credit certificate for the cardholder, and the cardholder can use the card to shop, consume or enjoy specific services can be called a credit card.