High temperature and melting point, but poor thermal stability, narrow processing temperature range (about 10 ℃), slightly lower stability to acid and alkali; And a total of Polyoxymethylene has low density, crystallinity, melting point, and strength, but has good thermal stability, is not easily decomposed, and has a wide processing temperature range (about 50 ℃), with good acid-base stability. It is an engineering plastic with excellent comprehensive performance. Having good physical skills