Online, easily arranged!

As a service towards our regular customers, we kindly refer you to our online certificates portal. Are you registered yet? Then you can click upon below link to see and download your certificates.

https://ruiter.centix.com/

Do you still need to register or have any other questions? Then you can contact us at (+31) 78 82 00 600 and ask for a representative of our Certificates Department. You can also send us a mail at certificates@drstk.nl.