The retailer is Dymond RC. They can be located at
http://www.rc-dymond.com/
I purchased their "Flipper" glider 5 years ago. It is still going strong even with several cartwheels. Their servos are German made but I do not know who is the original manufacturer . I have had good support from them even when the dog chewed up my canopy. I never expected to be able to get a replacement but hey, they were able to get me one.