Is there any composite exhibition in Europe? 
Of course, yes!
The annual big show for you would be Composites Europe in Essen. http://www.composites-europe.com I plan to be there this year, so let me know if you go.
In the US there’s the annual SAMPE show, but it’s not as good IMO. Still very interesting, and great way to meet others in the industry.
the JEC composites exhibiton in Paris is another and probably the main one in europe. We will be there 1-3 april.