... .made of carbon steel,stainless steel, manganese steel wire, nickel wire, galvanized wire,alloys,etc 2.OEM: all parts ... 15 days after the sample approvalProduct Description: Products Name cooper plated shiny comperession spring for toys Brand NameXLSWire dia0. ... steel, manganese steel wire, nickel wire, galvanized wire,alloys,etc Surface Treatment Zinc,Nickel,Silver,Golden,Tin-plated,Powder coating ...