Canned food or beverages are very common in the market, and most of these cans are made of aluminum or tinplate. The manufacturing cost of aluminum is relatively low, and its ductility is relatively good, so it is also more convenient in the manufacture of cans.   Aluminum cans have always been at the forefront of packaging design, they are lightweight and easy to recycle. Easy to open. The lid is a pull-tab easy-open lid. When the tab is lifted, the rivet drives the pear-shaped notch, and the liquid inside can be sucked out or poured out through the orifice, which is simple and safe. Easy and high-speed filling. The advantages of aluminum cans are also reflected in portability. Aluminum cans are lightweight, high temperature resistant, drop resistant, and easier to carry than glass bottles. Of course, it also has an excellent cold steam type. The tube wall is thin, about 1/3 of the thickness of the thin aluminum plate, and has excellent thermal conductivity. Freezing and reheating are fast and well adapted to consumer requirements. No side seam welds. The cost of this product is very low. The aluminum can adopts the necking process and the thinning and stretching process, and uses less material, saving 3%-5% than the three-piece can, and due to mass production, the cost is lower. Of course, the can body printing of aluminum cans is easier to make a good texture than the label of plastic bottle body. And during production, it can be autoclaved if used. No matter what production process is used, the shelf life of aluminum cans cannot reach such a long period. Therefore, when the product chooses a long shelf life, it can only be packaged in aluminum cans.   Aluminum cans can withstand drops, and are widely used in medical, powder and other fields with their unique advantages to ensure the airtightness and safety of medicines. In terms of environmental protection and safety, aluminum cans are often used in food packaging, pharmaceutical packaging and other fields, and their safety and environmental protection performance is an important factor to ensure the safety and hygiene of packaged items.