Tender For custom bid for services annual maintenance contract for thermal conductivity measurementequipment and annual maintenance contract for thermal expansion measurementequipment-contractor must ensure the working of the complete system (both hardware as well as software parts). cleaning of the optical parts will be carried out by the contractor if required., preventive maintenance in the entire unit including furnace, furnace power supply, controller systems, gas purge system and water cooling system. contractor should maintain an uptime of more than 90% for the equipment.