Over the years OTSA has built up a strong list of clients, who organise market leading shows in a number of industry sectors and countries. We take pride in the length of time that we have represented some of these organisations:



The advertising and marketing company of German Pharmacists AVOXA is a subsidiary of the Federal Union of German Pharmaceutical Associations (ABDA). They offer a variety of services to the pharmaceutical profession and they are the organisers of the largest pharmaceutical trade fair in Europe: Expopharm.

Messe Berlin

(Germany, Singapore, China)

Messe Berlin has been organising international trade fairs and congresses since 1822. They organise more than 100 regional, national and international in-house and guest events each year.

Messe Essen


With 50 trade fairs and exhibitions, including ten leading trade fairs, the Essen exhibition centre is among the top ten exhibition locations in Germany. An appealing mix of international, national and regional professional and consumer trade fairs attracts around 1.4 million visitors annually.


(Germany, Brazil, Russia, China, India, USA)

NürnbergMesse is one of the 15 largest exhibition companies in the world. The portfolio covers some 120 national and international exhibitions and congresses and approx. 40 sponsored pavilions at the Nürnberg location and worldwide.