Plastic particles refer to granular plastic, generally divided into over 200 types and subdivided into several thousand types.
Common plastic particles include general plastics, engineering plastics, and special plastics.
General plastics: polypropylene, polyethylene, polyvinyl chloride, polystyrene, polyester, polyurethane, etc.
Engineering plastics: nylon, polytetrafluoroethylene, polyformaldehyde, polycarbosilane, etc.
Special plastics: thermosetting plastics, functional polymer plastics, such as artificial kidneys.