In a directive transmitted per e-mail in July 2013, the German Foreign Office has informed the German Embassy and Consulate Visa Sections all over the world that in general, an official invitation letter from the trade fair organizer is no longer required when applying for a trade fair visa (see website AUMA). Moreover, visa fees are waived for exhibitors at German trade fairs (see: website of the Federal Foreign Office).
When applying for your visa, simply refer to this information. In case the visa section responsible for issuing your visa should nonetheless request that an official invitation letter be presented, please send an e-mail to: firstname.lastname@example.org
Additional information about visa procedures, requirements for the issue of visas, visa fees and application forms are available in different languages on the webpage “Visa requirements” of the Foreign Office, as well as the respective websites of the embassies and consulates.
To ensure you obtain your visa before the trade fair starts, we recommend that you submit your visa application in due time. Applications can be made as early as three months before the time of entry.