... 3.high quality and best service 4. OEM service metal case : Product Type metal case Materialsteel sheet, Al sheetMachining typestamping, punching, bending, ... ,brass,copper,alloy steel,aluminum,cold rolled steel with various plated;3)Surface treatment:kinds of plating( ... 4)Standard/specification:OEM service as per customers' requests,with in-house tooling design & fabricating;5)Quality assurance ...