Definition of POM: POM is a linear polymer with no side chain, high density and high crystallinity. According to the different chemical structures in its molecular chain, it can be divided into paraformaldehyde and paraformaldehyde. The important differences between them are that paraformaldehyde has high density, crystallinity and melting point, but poor thermal stability, narrow processing temperature range (about 65438 00℃) and slightly low stability to acid and alkali; The density, crystallinity, melting point and strength of polyoxymethylene are low, but it has good thermal stability, is not easy to decompose, and has a wide processing temperature range (about 50℃) and good stability to acid and alkali. It is an engineering plastic with excellent comprehensive properties. It has good physical, mechanical and chemical properties, especially excellent friction resistance. Commonly known as Saigang or Duogang, it is the third largest general plastic. Suitable for manufacturing wear-resistant parts, transmission parts, chemical and instrument parts.

One of synthetic resins, also known as polyoxymethylene resin, polyoxymethylene plastic, Saigang material, etc. It is a white or black plastic particle with high hardness, high rigidity and high wear resistance. Mainly used in gears, bearings, auto parts, machine tools, instruments and other products that play a skeleton role.