... Steel, Cast Iron, Aluminum, Copper, Brass and so on 3. Heat Treatment: Hardening and Tempering, High Frequency Quenching, Carburizing Quenching and so ... on. 4. Surface Treatment: Galvanizing/Zincplating, Dacrotized, Black Anodic Treatment, Spray Printing, Mirror Finish, Burnishing, Sand-blasting ...