Modified plastics are materials with uniform appearance obtained by filling, toughening, strengthening, blending, alloying and other technical means with primary form resin as the main component and additives or other resins that can improve the mechanical, rheological, combustion, electrical, thermal, optical, magnetic and other aspects of performance. According to the modified function, the modified plastics include flame retardant resins, reinforced and toughened resins, plastic alloys, functional color masterclasses, etc. Each type can be further subdivided according to different materials, and due to their respective performance differences, the application field is also different.