... Conform to ROHS ISO9001:2008 certificated 2.2*5.2mm PU Telephone Flat CableConductor: bare copper, tinned ... brown, purple, etc.Insulation: as your request, we have PU, PP, PVC, etc. availableOuter jacket: as your request ... to the specific quantityWe are a professional manufacturer of PU/ PVC/ TPE cable, including spiral cable, earphone ... use are environmental friendly 2.2*5.2mm PU Telephone Flat Cable