HPL manufactures Telephone Cables with Bare or Tinned Annealed Copper Conductor. HPL is an ISO-9001:2000 certified company. Telephone Cables with Bare or Tinned Annealed Copper Conductor is PVC / HR PVC / PE Insulated. 0.4 / 0.5 / 0.6 / 0.7 / 0.8 / 0.9 mm diameter conductors are available up to 50 pairs. Telephone Cables with Bare or Tinned Annealed Copper Conductor conforms to ITD Specification S / WS 113 B, 113 C and 114 B.