... stainless steel, carbon steel,aluminum Metal Part for Lamp Holder Material:stainless steelMOQ500 pieceCapacity100000piece/month Feature1) ... different kinds of materials are availableBattery spring used for electronics, toys, home appliances, hardware, recreational equipment ... chrome plating, zinc plating,etcPackage: polyfoam+carton for vacuum packaging.Delivery time7-9work daysPackage1) Inner packaging ...