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ABS resin is a blend that is an acrylonitrile-butadiene-styrene copolymer; its English name is Acrylonitrile-Butadiene-Styrene, abbreviated as ABS. The ratio of these three components is 20:30:50, and its melting point is 175°C. By changing the ratio of these three components, the method of combination, and the particle size, it is possible to produce a range of variants with different impact strengths and flow properties. For example, increasing the amount of butadiene improves the impact strength, but it reduces hardness and fluidity, as well as strength and heat resistance. ABS is a resin with excellent overall properties: it is non-toxic and has low toxicity. It possesses high impact strength over a wide range of temperatures. Its heat distortion temperature is higher than that of PA and PVC, and it offers good dimensional stability, with a shrinkage rate ranging from 0.4% to 0.8%; this rate can be reduced to 0.2% to 0.4% when reinforced with glass fibers. Moreover, post-plasticization shrinkage occurs very rarely. ABS has good formability, resulting in a smooth surface on the finished products. It also exhibits excellent paintability and dyeability, and can be electroplated in various colors. ABS still exhibits good blendability and can be blended with various resins to form alloys (blends) such as PC/ABS, ABS/PC, ABS/PVC, PA/ABS, PBT/ABS, etc., thereby endowing them with new properties and opening up new areas of application. When blended with MMA, ABS can be turned into transparent ABS, with a light transmittance of up to 80%. POM Polyoxymethylene: Chemical and physical properties. POM is a tough and elastic material that retains excellent creep resistance, geometric stability, and impact resistance even at low temperatures. POM includes both homopolymer and copolymer materials. Homopolymer materials possess excellent ductile strength and fatigue resistance, but are difficult to process. Copolymer materials have excellent thermal stability and chemical stability, and are easy to process. Both homopolymer materials and copolymer materials are crystalline materials and do not absorb moisture easily. The high degree of crystallinity of POM results in a fairly high shrinkage rate, which can reach as much as 2% to 3.5%. Different enhanced materials have different shrinkage rates. POM has a very low friction coefficient and excellent geometric stability, making it particularly suitable for manufacturing gears and bearings. Due to its high-temperature resistance, it is also used in piping components (pipe valves, pump housings), lawn equipment, and more.