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Locksmith services
Fireproof rooms, design and installation
Fireproofing services for buildings
Stove pipes and stove pipe fittings, metal
Water heaters for central heating plant
Panels, radiant heating
Grilles and registers for hot air heating plant
Convector casings for room heating installations
Fuel feeders, central heating plant
Igniters, central heating plant
Headers, central heating plant
Valve and manifold assemblies (shunt units) for central heating systems
Economisers, central heating plant
Control and regulation systems, central heating systems
Building ventilation equipment, plastic
Telephone headsets
Radio beacons
Public address equipment
Crossovers for loudspeakers
Loudspeakers, electrostatic
Loudspeakers, moving coil
Loudspeakers, moving iron
Loudspeakers, piezoelectric (crystal)
Loudspeakers, exponential horn
Loudspeakers, reversed horn
Loudspeakers, horn
Loudspeakers, multi-element
Loudspeakers, re-entrant
Loudspeakers, elliptical
Loudspeakers, hazardous area, explosion proof
Loudspeakers, weatherproof
Loudspeakers, heat and humidity resistant
Loudspeakers, miniature
Loudspeakers, heavy duty, discotheque and stage use
Loudspeakers, high power
Loudspeakers, glass
Loudspeakers, flat panel
Loudspeakers, column type
Loudspeakers, ceiling type
Loudspeakers, pendant orbit
Loudspeakers in cabinets
Loudspeakers, high fidelity (hi-fi)
Loudspeakers, personal computer (PC)
Loudspeakers, personal computer (PC), wireless
Loudspeakers for home theatre systems
Loudspeaker kits, home assembly
Loudspeakers, mobile communications, motor vehicle
Acoustic boxes
Megaphones
Loudspeaker cones
Tweeters
Woofers
Loudspeaker gaskets
Loudspeaker voice coil formers
Drivers (magnetodynamic units) for loudspeakers
Loudspeaker diaphragms
Loudspeakers, motor vehicle
Headphones, moving coil
Headphones, moving iron
Headphones, double impedance
Headphones, tropicalised
Headphones, stereo
Headphones, high fidelity (hi-fi)
Headphones, single earpiece
Headphones, double earpiece
Headphones, helmet type
Headphones, cordless
Monitors, personal (in-ear), for musicians
Earphones, dictating machine
Theatre or concert hall sound systems
Passenger address systems for aircraft and trains
Elements, electric
Television test card generators
Telephone cable gas pressure monitoring systems
Local area network (LAN) test systems
Analysers, network
Phase fault monitors
Analysers, mains sequential harmonic
Voltage conditioners, AC, power line
Analysers, transfer function
Underground cable locators
Frequency synthesizers
Standing wave ratio measuring instruments
Spectrum generators, random
Impedance meters
Fault indication equipment, electric circuit, portable
Fault location equipment for underground electric cables
Transmitter monitors
Transmitter output meters
Test equipment for electromagnetic susceptibility
Acoustic shock suppressors
Measuring instruments, crosstalk
Measuring instruments, noise transmission, telecommunications systems
Electrical test equipment, telephone cable
Electrical test equipment, telephone transmission equipment
Electrical test equipment, sound receiver, for telephones
Test equipment for telephone exchanges
Electrical test equipment, telegraph relay
Oscillators and field meters for television aerial installations
Analysers for telegraph and telephone line traffic
Dummy loads, measuring and testing
Electrical test equipment for television sets and television systems
Test benches for telecommunications
Test equipment for push-button telephones
Test and fault detection equipment for mobile telephones (cellular phones)
Radio frequency (RF) measuring equipment
Pulse meters, recording, for telephony
Tracing instruments, individual wires in telecommunication cables
Cable fault locators, telecommunications
Testing equipment for asymmetrical digital subscriber lines (ADSL)
Time domain reflectometers (TDRs)
Testing and measuring laboratories, mobile, for telecommunications
Regulators, central heating plant
Electronic article surveillance (EAS) systems, acousto-magnetic
Electronic article surveillance (EAS) systems, electromagnetic
Electronic article surveillance (EAS) systems, radio frequency (RF)
Signalling equipment for firing ranges
Signalling discs, police
Warning devices, emergency, voice synthesis
Electrical components and parts
