It depends on what kind of box you want to print. It is recommended to use environmentally friendly water-based ink or soybean ink for food, and it is best not to use it directly. Generally speaking, it is best not to let ink directly contact food. If it is direct contact, not only the requirements for ink are high, but also the environmental requirements for the workshop are very high. If you are a printing company, you can check the top 100 printing companies on Baidu. It is mainly better to find a larger printing company nearby. You can leave me a message if you have any questions. I am a printer and have done some packaging boxes in the food industry.