red copper shell ( acid pickling nickel-plating ) 1.OEM is accepted 2.Specialty in sencor case product 3.Competitive price, high quality and quick delivery 4.Available to ROHSMeterial: Steel, Stainless steel, aluminum alloy, red copper, brass, bronze.Produce process:Stamping, Deep drawning, Welding.Die and jig: Professional die and jig design by own engineer.Surface treatment: Professional ...