Wallspan PVC panels (by Dumaplast) for shower stall

Does anyone know where these can be purchased in the US or how to contact the US manufacturer? I have emailed the contact mentioned on their website (it bounced) and the website based contact just hangs the browser when you submit. (Hope the product is better than their website :-) ).
(website) http://www.dumaplast.com/index.html
http://forum.doityourself.com/showthread.php?t "3534&goto=nextnewest
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