Polyoxymethylene (POM) is a kind of material with good rigidity in engineering plastics, and its resilience is similar to that of polymer plastics. POM is relatively better because of its outstanding rigidity.

The scientific name of POM is also Saigang and Special Steel. It is polymerized with formaldehyde as raw material. POM-H (polyoxymethylene homopolymer) and POM-K (polyoxymethylene * * * polymer) are thermoplastic engineering plastics with high density and high crystallinity. It has good physical, mechanical and chemical properties.