ABS plastic is a terpolymer of three monomers of acrylonitrile (A), butadiene (B) and styrene (S). ABS plastic has the common properties of the three components. A makes it resistant to chemical corrosion and Heat, and have a certain surface hardness, B makes it have high elasticity and toughness, S makes it have the processing and molding characteristics of thermoplastics and improve electrical properties. Therefore, ABS plastic is a kind of "tough, hard and rigid" material with easy-to-obtain raw materials, good comprehensive performance, low price and wide range of uses. ABS plastic has been widely used in machinery, electrical, textile, automobile, aircraft, ship and other manufacturing industries and chemicals.

PA plastic (nylon, Polyamide), began to develop and produce injection molding products in the 1950s, to replace metal to meet the requirements of downstream industrial products lightweight and cost reduction. PA has good comprehensive properties, including mechanical properties, heat resistance, abrasion resistance, chemical resistance and self-lubrication, and has low friction coefficient, certain flame retardancy, easy processing, suitable for glass fiber and Other fillers are filled to enhance modification, improve performance and expand the scope of application.