List of activities classified inside the UK SIC Code 27900
- Welding machines (electric) (manufacture)
- Simulator (battle) (manufacture)
- Signalling equipment for road traffic (electric) (manufacture)
- Signal generator (manufacture)
- Resistors including rheostats and potentiometers (manufacture)
- Rectifying valve and tube (manufacture)
- Rectifier, solid state (manufacture)
- Railway signalling equipment (electric) (manufacture)
- Particle accelerator (manufacture)
- Indicator panel (manufacture)
- Extension cords with insulated wire and connectors (manufacture)
- Extension cords made from purchased insulated wire (manufacture)
- Simulator (driving) (manufacture)
- Simulator (other training (except flying trainers)) (manufacture)
- Welding electrode (manufacture)
- Wave form generator (manufacture)
- Uninterruptible power supplies (UPS) (manufacture)
- Ultrasonic cleaning machines (except laboratory and dental) (manufacture)
- Thyristor (manufacture)
- Surge suppressors (manufacture)
- Solid state inverters (manufacture)
- Solid state fuel cells (manufacture)
- Solid state battery chargers (manufacture)
- Soldering machines (electric) (manufacture)
- Soldering irons (electrical, hand-held) (manufacture)
- Electronic scoreboards (manufacture)
- Electronic miscellaneous unspecified equipment (manufacture)
- Electrical capacitors (manufacture)
- Electrical base metal conduit and fittings (manufacture)
- Electric bells (manufacture)
- Detection apparatus (manufacture)
- Cyclotron (manufacture)
- Contacts and other electrical carbon and graphite products (manufacture)
- Carbon or graphite electrodes (manufacture)
- Carbon brush (manufacture)
- Bells (other than telephone type) (electric) (manufacture)
- Bell apparatus (other than telegraphic or telephonic) (manufacture)
- Backward wave oscillator (manufacture)
- Electrical carbon (manufacture)
- Electrical condensers and similar components (manufacture)
- Electronic filter (manufacture)
- Electromagnets (manufacture)
- Electrodes for welding (manufacture)
- Electrical welding equipment (manufacture)
- Electrical traffic lights (manufacture)
- Electrical soldering equipment (manufacture)
- Electrical signs (manufacture)
- Electrical pedestrian signalling equipment (manufacture)
- Electrical insulators (except glass or porcelain) (manufacture)
- Electrical door opening and closing devices (manufacture)
- Electrical conduit tubing, base metal (manufacture)
- Appliance cords with insulated wire and connectors (manufacture)