1, up, down, left and right need 2mm bleeding position.

2. The color mode should be CMYK. The image file is higher than 350 dpi l.

3. The layout of the copy should be more than 3mm away from the cutting line to avoid the text being cut off when cutting.

Business cards, also called cards, were called name thorns in ancient China. It is a piece of paper, indicating a name, its affiliates, company units 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. Social economy is still underdeveloped, most people are fixed on the land, and slaves have no right to education.

A few hereditary slave owners formed a small ruling group. Because the ruling circle has not changed much for a long time, there is not much literacy, and it does not have the conditions to form a business card. The earliest appearance of business cards began in feudal society.

During the Warring States Period, China began to form a centralized state. With the use of advanced production tools such as iron, the economy has also developed, which has led to the development of culture. Confucianism represented by Confucius and other schools have formed a scene of contention.

Countries are committed to expanding their territory, supporting and spreading their own culture, and a large number of emerging nobles appear in the war. Especially after the unification of Qin Shihuang, China began a great reform: unifying national characters.