1,unique hot-swap server case 2,Each HDD bays with indicating lights 3,Screless design to facilitate assembly and maintenanc 1. Material: carbon steel (hot rolled, cold rolled, strip steel), galvanized steel, stainless steel, aluminum, brass, other metal materials according to drawings.2. Process: Stamping, punching, bending, welding, threading, grinding, milling, machining, lathe, assembling, ...