Since you are asking about the Topline 5, which is not sold in the U.S., you probably need to research this on the OFA world wide web page at
http://www.oneforall.comClick on 'html site', and a world map pops up. Click on the country/region of choice, and another page pops up. If you go to the "Where To Buy" section of that web page, they have a map of countries OFA sells it's products. Click on a particular country and contact information is shown. For example, the email address for OFA in Great Britian is
[email protected].
It's a bit clunky wading through the pages, but you should be able to get an email address eventually.
Have you searched through this site and the Cinema 7 FAQ webpage for what you want?