Conis JSCo.
- Manufactures aluminum, ceramic, polyester and polypropylene capacitors, hybrid circuits, resistor networks, and alarm systems.
- http://www.conis-bg.com/businesscard.htm

Comet Electronics
- Distributes and trades with electronic components for industrial purposes in Bulgaria and the Balkan region.
- http://home.comet.bg/main/index.html

Silvy Cable
- Produces silver cables for audio systems. Includes a product list and contact information.
- http://www.silvycable.com/

MediaSys
- Provides quality DVD mastering, replication and printing solutions using advanced manufacturing equipment. Includes a profile, technical specifications, and price list.
- http://mediasys-bg.com/

Sintis Ltd.
- Designs and manufactures electronic countermeasures equipment - radio jammers, bug detectors, radio-monitoring systems
- http://www.sintis.net/frame2.htm