What needs to be added is that it is impolite to have only a position without a name.

The boss of a small company basically wears a lot of hats, and can write general manager, sales manager, ceo, chairman and so on. A business card, also known as a card (written in Cantonese (kā)), was called a name thorn in ancient China. It is a piece of paper indicating the name, organization, company and contact information. Business cards are the fastest and most effective way for new friends to get to know each other and introduce themselves. Exchanging business cards is the first standard official action in business communication.