In today's society, tin box packaging has almost occupied various industries, from food tin boxes, medicine tin boxes to cosmetic tin boxes, which have been seen everywhere in our lives. The reason is that one is because the iron box can be environmentally friendly, and the other is because of the problem of grade and transportation. There is also a very important reason, because the iron box and the can package have the advantage that the human body has no substitute for other packaging.

As we all know, iron is an essential trace element in the human body and has a great effect on the human body.

First of all, the iron in the iron cans is closely related to the blood of the human body. It is a component of hemoglobin and myoglobin, cytochrome A and some respiratory enzymes, and participates in the transfer, exchange and tissue breathing of oxygen and carbon dioxide in the body. Especially for female friends, it is easy to be anemia, and the products that are packaged in iron cans for a long time have a certain effect on **. Of course, the iron content that can be ingested in tin cans is limited, and more attention should be paid to diet and lifestyle. Because iron is involved in many important biochemical processes in the body, iron is an indispensable element of tissue metabolism. Iron deficiency can cause a variety of tissue changes and dysfunction, such as affecting the development of ** tissues and resistance to infection. Therefore, people should increase the resistance by eating more iron-rich foods such as animal liver, animal blood and lean meat.