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/

Freeland Products, Inc.
Rebuilder of vacuum power grid tubes for industrial, radio and television applications.
http://www.freeland-inc.com/

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/

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

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

Philips
Manufacturer of color television sets, lighting, electric shavers, color picture tubes for televisions and monitors, and single chip TV products.
http://www.philips.com/

Duncan's Amp Pages
Duncan's Amp Pages - Internet resource for guitar amps and vacuum tubes
http://www.duncanamps.com/