Shenzhen Haohaichang Industrial Co.,Ltd is one of the top level switch copper pin manufacturers and supplier China,Website ... autoterminal-hhc.com, we export advanced customized switch copper pin, welcome to contact us.product specificationsItem. ... High Precision RodMaterialIron, Stainless Steel, Brass, Al, Copper, etcSurface treatmentZinc, Copper Nickel, Chrome, Tin, etc.ProcessAutomatic LatheOuter Dia ...