... excellent restoring force! we will manufacture your 4P4C modular plug telephone spiral cord to the highest standard, in order to get our ... is the conductor material? We have bare/tinned copper, tinsel wire, and etc.what is the core number?do you need ... cold, heat, grease, acids, bases, high abrasion, flame retardancy Aplication: telephone handset 4P4C Modular Plug Telephone Spiral Cord