| 36 | Freezing, refrigerating, heating systems for cargo |
| 577 | Central heating systems w/radiators |
| 581 | Sanitary supply systems |
| 64 | Boilers, steam, gas generators |
| 647 | Steam converters |
| 648 | Central heating and thermal oil boilers |
| 649 | Gas generators |
| 7 | Systems for machinery main components |
| 72 | Cooling systems |
| 74 | Exhaust systems, air intakes |
| 794 | Automation equipment for boilers |
| 89 | Electric consumer systems |
| 897 | Electric fans |