... , CNC machining, boring, grinding, honing, gear manufacturing, welding, assembly2) Materials: carbon steel, alloy steel, stainless steel, cast iron, aluminum, bronze3) Secondary ... , surface hardening, annealing, tempering, carburizing CNC machined parts, precision machined parts, batch machined partsOEM parts supplyCompetitive price and time deliveryISO 9001: 2000 Certified ...