PVC is polyvinyl chloride. In the 1980s and 1990s, it was widely used in the fields of edible oil, mineral springs, cosmetics, and various packaging materials that directly contact food. It is easy to process, low cost, and widely used. Occupies a considerable market. However, with the continuous improvement of requirements, PET and PC are gradually being replaced in the field of direct contact with food. The advantages of PVC are low cost, easy processing, and good transparency. The disadvantage is low temperature resistance. If you buy bad PVC raw materials, the vinyl chloride monomer content is likely to exceed the standard. The kind of water bottle known by Coca-Cola is generally PET. Commonly known as polyester chips in our industry. This kind of product was widely used in the field of direct contact with food instead of PVC in the late 1990s and early 20th century, but the disadvantage is also that the temperature resistance is not high. When the internal temperature exceeds 100 degrees, it is easy to deform and shrink. It is used more in the cold filling industry. PE or PP bottles are generally used in the hot-filling industry. PC is polycarbonate. For a long time before a few years ago, PC has high temperature resistance, good transparency, ideal strength and toughness, so it occupies an important position in the field of drinking water bottles, such as common space cups, baby bottles and other industries .