The ink mentioned by this big brother is gravure ink, plastic packaging bag, corrugated board and so on. These are all what you call ink printing. The scientific name is gravure ink, which is called ink when it is convenient for everyone. When you say ink, you mean ordinary offset printing ink, such as ordinary books, picture books, exquisite packaging boxes, etc., all printed with ink. The offset printing factory uses ink, and the gravure printing factory uses ink, which depends on the factory's own machine. Now it is said to encourage ink printing. For example, countries with cigarette packs are gradually changing their processes and replacing ink with ink. The use cost of ink is low, but it is only low when printing a long version, and it is environmentally friendly. The better ones can reach the edible level, and the offset printing ink costs a little more, but the printing effect is good. The beauty of printing is beyond the reach of ink, and offset printing can be printed by all workers. Now, it is impossible to say which printing method you prefer. Each has its own uses and markets. Some printing houses change the list of gravure printing into offset printing, and some offset printing lists are gravure printing. According to the different environment, it is necessary to strike a balance between cost and meeting customer needs.