Many business people will exchange business cards when they meet each other at first time. When you hand out or receive a business card, you should use both hands to express your respect for them. Business cards will help you remember other people name，get to know their background. The cards also make it easy for people to keep in touch with each other later. Some people maybe like to list a lot of official titles on the business cards. But you can just remember the first title on the cards. Generally speaking, the first title is the most important one.