A# Supply, installation, testing, comprehensive maintenance of VRF air conditioning systems including refrigerant, piping, ducting Required maintenance materials necessary accessories and associated electrical works. B# Supply and installation of necessary spare parts along with Repair, servicing, testing, maintenance of existing VRF air conditioning systems including refrigerant, piping, ducting and associated electrical works. C# Supply Electrical Accessories and Repair, Servicing & Maintenance of sub-station Equipment. D# Supply, Replacement, Testing and Commissioning of Substation equipment Including VCB, 2500A Copper Busbar System, CT/PT, IDMT Protection Relay, Battery Charger and Battery Bank, HT/LT Switchgear, Capacitor Bank, Power Factor Correction System, Control & Protection Equipment, Earthing and Other Associated Electrical Works. E# Supply of Necessary Spare Parts, Equipment and Accessories for Existing Feeder, Submersible pump, Booster, Mud and Oil Pumping Systems Including Pump Motors, Control Panels, Valves, Piping, Cables and Associated Electrical and Mechanical Items. F# Supply of VRF Indoor Unit, Refrigeration Copper Tubes, Fan Motors, Relays, Capacitors, Compressor Oil, Compressors, Control Breakers, Magnetic Contactors and Other Necessary Components, Including Installation, Repair, Servicing and Maintenance of Air-Conditioning System.