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Plastic raw material
Plastic raw material is a polymer (polymer), which can also be called polymer or giant molecule, and is also commonly known as plastic or resin. The so-called plastic raw material, in fact, it is one of the [synthetic resin], the shape is similar to the [loose resin] in the natural resin, but because of the chemical force to synthesize, and is called plastic.
The polymer is made up of many small, simple molecules that are combined by covalent bonds. There are many types of polymers, which can be divided into two main categories if they are generally classified by their change in heat.