High Voltage HV cable

Looking for specific HV cable
Hello, ... is freight rail company. (100% subsidiary of DB Group - Germany) In connection with our operating activity, we kindly ask you about your offer for high voltage cable ( attached file ). We are interested in 20-50 meters. We want to highlight , that voltage in the rail system in Bulgaria is 25 kV ( not like Germany – 15kV) We are looking for cable with nominal voltages Uo/U=26/45 kV (or 38/66 kV). I hope you can help us and I look forward for your answer