POM gears Plastic gears with small module, 1. Material: stainless steel, C45,POM 2.Production and ... : Hardening and Tempering, High Frequency Quenching, Carburizing Quenching and so on.3. Surface Treatment: Galvanizing/Zincplating, Dacrotized, Black Anodic Treatment, ... Spray Printing, Mirror Finish, Burnishing, Sand-blasting and so on according to ROHS demand.4. Inspection: All items are checked ...