Black PU Curly Cord PU jacket, PP insulation, copper conductor ROHS compliance! Excellent restoring force! we will manufacture your PU curly cord to the ... , E, B, C?what is the conductor material? we have bare copper, tinned copperwhat is the conductor AWG? what is the core ... , grease, acids, bases, high abrasion, flame retardancy Black PU Curly Cord