... 1.pom product is a type of general hot plastic , and has the good function of machine, electricity , bear to whet t ... the metals, and especially copper aluminum, zinc etc. metals and metal alloy . It is widely used in the electronics, electricity, car, light ... , building materials...etc. realms. 2.Polyoxymethylene has the good function of machine, electricity f, bear to whet t, sizes stability, bear ...