| A03 | Engineering services |
| A10 | Project management, construction management |
| J01 | Combustion engine |
| J02 | Generators, alternators & dynamos |
| J03 | Aggregates |
| J04 | Gears |
| J08 | Propellers & impellers |
| K01 | Converters (voltage, frequency), receivers, el. dampers and rectifiers |
| K05 | Switchboards & relays |
| K09 | Electrical motors & starters |
| L01 | Sensors, gauges & detectors |
| L02 | Meters & indicators |
| L05 | Alarm equipment |
| L06 | Regulators & switches |
| L07 | Centrals, consoles & panels |
| L08 | Monitoring equipment |
| L13 | Control & automation systems |