There are several ways you can contact us. 

By e-mail : 

info@TestDimensions.com

By letter : 

Test Dimensions Publishers,

PO Box 95406,

2509CK the Hague,

the Netherlands.

By phone : 

If you are in Europe you can call (by preference on fridays) our sales consultant Bart Garssen at 0031.6.515.07.125.