- Advanced Motion Controls
 - Camarillo - Manufacturer of high performance brushless and brushtype PWM servo amplifiers. - American Microwave Technology
- Anaheim - Custom RF and microwave power amplifiers for the wireless, scientific/medical and application specific industries.
- American Opto Plus LED Corp.
- San Dimas
- Autocode
- Westlake Village - Automatic morse code identifiers for amateur and commercial radio operations.
- Carley Lamps
- Torrance - Offering high intensity subminiature and miniature lamps and reflectors.
- Casix, Inc
- Monrovia - Develops and manufactures crystals and optical components for lasers.
- Centerpointe
- Cypress - Electronic kits, components, training labs, and projects.
- Cheshire Engineering Corp.
- Pasadena - Specialising in signal and video processing implemented in both hardware and software.
- Control Switches International
- Long Beach - Motor control disconnect switches.
- Daico Industries, Inc
- Rancho Dominguez - IF/RF and microwave control products like switches, phase shifters and attenuators.
- Datatronics, Inc.
- Romoland - Manufacturer of transformers, inductors, coils, chokes, and custom magnetics.
- Electronics Representatives Association Southern California Chapter
- Pasadena
- Elite Magnetics Inc.
- Cerritos - Top quality soft ferrite cores and bobbins.
- Field Management Services@
- Los Angeles
- Futek Advanced Sensor Technology, Inc
- Irvine - Manufacturers of load cells, force, torque, and pressure sensors. Services include instrumentation, calibration, and design consultation.
- Glentek Motion Control Solutions
- El Segundo - Manufacturing servos, motors, amplifiers, brushless motors and DC motors.
- JCA Technology, Inc
- Camarillo - Manufacturer of microwave amplifiers for military or commercial applications.
- Kingbright LED
- City of Industry - Opto-electronic components manufacturer has its LED miniature lamps and displays functioning in telecommunications, automotive, consumer electronics, and computer peripherals.
- Lasermate Corporation
- Monterey Park - Manufacturer of laser diode modules, laser pointers and diode pumped solid-state green lasers; supplier of laser diodes, optics and circuitries.
- Laserworks
- Fullerton - Line of laser related products and projection equipment.
- LEDTronics, Inc.
- Torrance - Design, manufacture and packaging of based, panel, PCB, SMT & infra-red LEDs.
- Magnet Sales and Manufacturing
- Culver City - Standard and custom magnets, magnetic assemblies, prototype to production, and short leadtimes.
- Martin Metals, Inc.
- Los Angeles - Environmentally conscience organisation engaged in recovery, recycling, and refining of precious metals.
- Metric Supply Co.
- Chatsworth - Distributes soldering and desoldering equipment and accessories.
- MetroLaser, Inc.
- Irvine - R&D provider specialising in holography, spectroscopy and particle characterization.
- MWK Industries
- Corona - HeNe, argon, semiconductor, CO2 and other laser instruments.
- NCG Companies
- Anaheim - Comet brand antennas for amateur radio and land mobile use.
- P.K. Metal Supply
- Los Angeles - Solder and fluxes for reliable electronics.
- Penta Laboratories
- Chatsworth - Manufactures and distributes electron tubes for use in broadcast, industrial, military, and medical equipment.
- Phoenix Enterprises
- Distributor of electronic components specialising in connectors, sockets, headers, jacks, plugs, shunts, terminals, dsubs, receptacles, ribbon, telephone and coaxial cable. Millions of parts in stock.
- Photo Research, Inc.
- Chatsworth - Manufacturing precision instruments which measure light and colour for photography.
- Rantec Microwave and Electronics
- Calabasas - Microwave antennas and power systems.
- RR Audio Laboratory
- Burbank - High resolution loudspeakers and acoustical services provided for studio and home applications.
- Sanyo Fisher Service Corp.
- Gardena
- Servo Magnetics Inc.
- Canoga Park - Manufacturer of high performance DC motor products including brushless, brush-type, moulded motors, and linear actuators.
- Shinano Kenshi Corporation
- Culver City - Small motors including stepping motors, DC brushless motors and DC servo motors.
- Southwest Electronics
- Los Angeles - Independent distributor of active, passive, electromechanical and interconnect electronic components. Current, allocated, obsoleted, or hard-to-find devices.
- Spectratek
- Los Angeles - Manufacturers of holographic film, labels and pigment for packaging, paints and coatings.
- Teledyne Lighting and Display
- THHC Lighting
- City of Industry - Lamps and bulbs including low voltage miniature xenon lamps: Xelogen JC G4 bi-pin, festoon, rigid loop and wedge base.
- Uptime Electronics, Inc.
- Whittier - Service, engineering, and parts for industrial electronics, numerical controls, and servo motors.
- Volutone Distributing Company
- Simi Valley - Consumer electronics and supplies for the home, business and auto in the western United States.
- Wamco
- Fountain Valley - Supplier of the Oshino sub-miniature lamps, incandescent displays, and night vision filters.
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