Jingtai stationery introduces the card sleeve although it has many small functions.

With the improvement of our quality of life, with more and more new inventions and new discoveries, in the colorful life, the card is gradually coming into our life. Now there are various kinds of card sets, bank card cards, traffic card sets, bus card sets and so on. These card sets are beautifully decorated with a variety of cartoon styles, which make people fondle admiringly. Besides, it's just a small card sleeve. They are very useful.