HILO-TEST GmbH
- Hennebergstr. 6, 76131 Karlsruhe
- +49 (721) 931090
- +49 (721) 378428
EM Test GmbH
- Lünener Str. 211, 59174 Kamen
- +49 (2307) 260700
- +49 (2307) 17050
TestDaF-Institut
- Massenbergstr. 13 b, 44787 Bochum
- +49 (234) 32-29770
- +49 (234) 32-14988
Marvin Test Solutions
- Irvine, CA 92614, 1770 Kettering
- +1 (949) 263-2222
- +1 (949) 263-1203
HAEFELY TEST AG
- Lehenmattstrasse 353, 4052 Basel
- +41 (61) 373-4111
- +41 (61) 373-4912
TEST Berlin GmbH
- Knesebeckstrasse 59/61, 10719 Berlin
- +49 (30) 39999-10
- +49 (30) 39999-18
Test Rite International Germany
- Merkurring 82, 22143 Hamburg
- +49 (40) 606870-0
- +49 (40) 606870-78
WG-Test GmbH
- Hertzstr. 16, 71083 Herrenberg
- +49 (7032) 32098-0
- +49 (7032) 32098-29
SupraTest GmbH
- Steinbösstrasse 52, 72074 Tübingen
- +49 (7071) 610262
- +49 (7071) 650525
ChanTest Corporation
- Ohio 44128, 14656 Cleveland, Ohio
- +1 (216) 3321665
- +1 (216) 3321706