... be made into many kinds of componets as a substitute for Zinc, Bronze, Aluminum and steel. As one of the ... top 5 engineering plastics(PA, PC, POM, PET or PBT, PPO) 2.POM is widely used in Aerospace ... be made into many kinds of componets as a substitute for Zinc, Bronze, Aluminum and steel. As one of ... the top 5 engineering plastics(PA, PC, POM, PET or PBT, PPO) 2.POM is widely used in Aerospace ...