Contact Us

Contact Us

Use the contact form, send us an e-mail ( or give us a call in Germany +49 7531 94500 20 in the US +1 (301) 244 6335. You can always send us an e-mail in between and we will take care of your request as quickly as possible, often on the same day, no matter which option you choose: We are looking forward to your message, comments and questions! PS: For technical questions, it is best to use our free Micro-Consulting.

Whatever options you choose: we are looking forward for your e-mail, comments and questions!


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I, Christian Johner, assure that your personal data will not be handed to any third party.

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Contact Options

  • Post or personal visit 

    • Germany: Villa Rheinburg, Reichenaustr. 1, 78467 Konstanz, Travel details
    • USA: 1738 Elton Rd., Suite 138 Silver Spring, Maryland 20903

  • Phone
    Germany: +49 (7531) 94500 20
    USA: +1 (301) 244 -6335
  • Email