Foreign Operation and maintenance of chillers with capacities not less than 5000 tons of cooling and their control devices - Operation and maintenance of cooling towers. - Performing dynamic balancing operations for rotating parts. - Operation and maintenance of large water valves and valves that operate with motors. - Maintenance of water tanks and basins. - Treatment of chiller water. - High-capacity water pumps. - Organizing and coordinating work inside refrigeration unit stations and implementing operating plans.