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Haefely Test AG  -  Tettex Instruments (click for more details) 
Precision. Swiss Made. Since 1904

Haefely Test AG is market leader in various high-voltage test products including the test, measurement and diagnostic equipment for a wide range of electrical applications. Test systems for laboratory, factory and field use are available. Haefely a single source supplier unifying powerful resources from design, development, engineering, marketing and support - from high-voltage design over electronics to software in one company.

Haefely & Tettex Products


  Hipotronics, USA (click for more details) 

Hipotronics, Inc. is the world's leading full-line manufacturer of high voltage test equipment and measurement instrumentation.

Hipotronics Products