Plastic accessories are matching parts made of various engineering plastics as substrates and processed by precision injection molding. With their lightweight, customizable, and multifunctional characteristics, they widely replace traditional metal components and have become indispensable basic accessories in industrial manufacturing, daily consumption, and other fields. According to the usage scenario and performance requirements, different substrates can be selected for adaptation. General purpose products often use PP and ABS materials, balancing molding stability and cost advantages; Wear resistant transmission types often use POM and modified PA materials, which have self-lubricating, low friction, and wear-resistant characteristics; High impact and temperature resistant materials such as PC and reinforced nylon can be used to adapt to working conditions with large changes in stress and temperature difference; For special requirements such as flame retardancy, food contact, acid and alkali resistance, material properties can also be adjusted through modified formulas. Compared to metal accessories, plastic accessories have significant functional differentiation advantages: controllable dimensional accuracy, high consistency within the same batch of products, and adaptability to automated batch assembly; Naturally possessing electrical insulation and chemical corrosion resistance, it can be used for a long time in humid, weak acid and alkali environments; Lightweight and with good noise reduction and shock absorption effects, it can effectively reduce the overall weight and operational noise of the equipment; It can form complex structures in one piece, reduce assembly processes, and balance structural strength and production economy. Plastic accessories are often produced using the mold injection molding process. The product structure, size, and appearance can be precisely customized through mold design, with high surface smoothness and no need for complex post-processing. Qualified plastic accessories have no defects such as burrs, shrinkage marks, cracking, etc. after molding. The key dimensional tolerances are stable, and the mechanical properties and weather resistance meet the corresponding industry standards, which can meet the requirements of long-term stable use. This type of accessory is widely used in many fields such as household appliances, automotive parts, electromechanical equipment, electronic appliances, hardware equipment, daily home furnishings, etc. It can be used as structural connectors, transmission components, sealing components, as well as for protection, insulation, decoration and other functions. It is a basic supporting product with rich product categories and strong adaptability in modern manufacturing.