Main:5-33.11. 01 "Technical operation of thermal energy equipment and thermal networks" 5-33.11.01. 03-3 "Flitter: repair and maintenance of heat network equipment"
5-33.11. 01 "Technical operation of thermal energy equipment and thermal networks" 5-33.11.01. 03-3 "Flitter: repair and maintenance of heat network equipment"
Plumber: repair and maintenance of heat network equipment
