The main functions are described below：
【Smooth operation】
1.You can add different types of business cards by clicking the Add button in the top right corner.
【Diversified display】
1.Make different type of business cards according to different customers.
2.According to the level, the color of the card display is different, which is convenient for the user.
【Easy to modify】
1.If you want to edit or delete, you can modify it by clicking each piece of data to the details page.
【Secure】
1.Login registration function, APP integrity, user data is more secure.