TubeTronic
tubetronic.com
http://www.tubetronic.com/

Phamitech International Company Ltd
Exporter of electron tubes, TWT, valves, thyratrons, magnetrons, klystrons, transmitting tubes, heating tubes, vacuum interrupters and X-ray tubes made in China
http://www.phamitech.com

Daily Electronics
Retailor of electron tubes and vacuum tubes, plus new and hard-to-find obsolete tubes.
http://www.dailyelectronics.net/

PSP-Tubes.com
PSP Tubes for Paint Shop Pro 6, 7 and 8. Free downloads. Tutorials. Members area for unlimited downloads.
http://www.psp-tubes.com/

Zeitmann tubes
We have NEW and used ECC81 ECC82 ECC83 ECC85 E88CC EL84 and EF86 Tungsram vacuum tubes.
http://www.zeitmann-tubes.com/

World Tube Audio
Manufacturer of tube amplifiers and loudspeaker kits such as parts, tubes, transformers, and circuit boards. Austria.
http://www.worldtubeaudio.at

Circuit Exchange International
Electronic and Radio schematics, Design,Theory,Circuit Analysis
http://www.mitedu.freeserve.co.uk/

TAI Services
NDT nondestructive inspection of tubes, eddy current testing on chiller tubes, flux Leakage testing on boiler tubes.
http://www.taiservices.com

Circuit Breaker Industries Ltd - CBI
Manufacturer of miniature and moulded case circuit breakers for overload and short circuit protection. From South Africa.
http://www.atc.co.za/

Vacuum Tubes, Inc.
Worldwide sellers of vacuum tubes and electron tubes for audio, radio, and industry
http://www.vacuumtubesinc.com/