Generally, storage boxes like this are made of sanitary and safe materials, which are harmless to human body, such as PC materials, PE materials, PP materials, etc., and the most commonly used material is PP material.

Plastics are mainly made of synthetic or natural polymer resins. A kind of material that is malleable at a certain temperature and pressure after adding various additives and can be fixed in shape after cooling. The process in which natural or synthetic polymer resin molecules are in a molten state and the auxiliary molecules are evenly distributed around them is called plasticization. If this process has been reached, it is called plasticization, but it has not yet been reached, and it is considered as not plasticization. Plastic packaging is one of the four major materials in the packaging industry: paper and cardboard account for 30%, plastic for 25%, metal for 25%, and glass for 15%.