The materials are mainly divided into metal materials and non-metal materials. Non-metal materials are divided into organic non-metal materials and inorganic non-metal materials. Inorganic non-metal materials are mainly divided into glass, ceramics, graphite, rock, etc. Organic non-metal materials are mainly divided into plastics, Rubber, wood, etc. The following is a brief introduction to the classification of the more subdivided plastic materials - food grade plastic materials. Personally, there are so many plastic materials, let alone remember their characteristics and uses, so that you can not even name the names of the 10 materials. For example, ABS is common. What is its full name? I believe that few people will remember the full name of ABS. To be honest, I can't remember it, but it does not prevent us from using it for product design and manufacturing. We only need to know the main characteristics of the material and what kind of product it is used on. As far as it is necessary to understand it, it is enough to check the information. Of course, if you have a good memory, like to study in a special way, or engage in material research, you should learn more about it. As for our structural design, it is important to learn to use materials. You can build it into a material library and use it as a standard part. Of course, according to specific industry sectors, such as the mobile phone industry, in the designer material library, the choice of shell material will generally choose plastic materials, but with the development of the industry, metal materials have become the mainstream of mobile phone casings, and even now slowly Glass and ceramic materials are popular, and the materials that were not available in the previous mobile designer materials library must now be updated into the material library. Therefore, the choice of materials is not static. When other hardware technologies of the products are updated slowly, the innovation of materials is also a product innovation. The following main categories are examples of the main characteristics of food-grade plastic materials and the products that use such materials in life for a deeper understanding and memory. Later, the other materials will be classified as such, such as transparent materials, wear-resistant materials, heat-resistant materials, etc., please pay attention.