The milk box is called Tetra Pak Pillow, and the boxed version is called Tetra Pak Brick. But the principle is the same. Milk is a necessity in life. Careful friends will find Tetra Pak's registered trademark logo on the top of the milk box. In fact, Tetra Pak is a series of packaging products for liquid foods developed by the Swedish Tetra Pak Company. This product currently has a market share of 95% in China's beverage packaging market. Back in the 1950s, Tetra Pak was one of the companies that provided packaging for liquid milk. Since then it has become one of the largest suppliers of packaging systems for milk, juice, beverages and many other products. Tetra Pak's "brick-shaped packs" and "pillow-shaped packs" are common milk and beverage carton packaging. They are classics of moderate packaging. In September 2004, they were exhibited at the "Austere Classics" exhibition at the Museum of Modern Art in New York. , a small Tetra Pak, embodies a lot of technology and wisdom, is simple but not luxurious, and has brought a lot of changes to our lives. The high-quality milk from the northern prairie of our country relies on Tetra Pak aseptic bags to be easily delivered to thousands of households thousands of miles away.