Gear Good quality raw material, Precision machining, Strict inspection. competitive and reasonable prices, long and relia Gear1. Material: Alloy Steel, Carbon Steel, Stainless Steel, Hardended & Tempered Steel, Cast Iron, Aluminum, Copper, Brass and so on2. Heat Treatment: Hardening and Tempering, High Frequency Quenching, Carburizing Quenching and so on.3. Surface Treatment: Galvanizing/ ...