... -hhc.com, we export advanced customized switch copper pin, welcome to contact us.product specificationsItem. ... Precision RodMaterialIron, Stainless Steel, Brass, Al, Copper, etcSurface treatmentZinc, Copper Nickel, Chrome, Tin, etc.ProcessAutomatic LatheOuter Dia ... controller PCB board conductive, switch, PTC heating electrode strip insulated, air conditioner, thermostat, refrigerator heating tube, ...