Flying Styro Models was a Czech company that manufactured a variety of small radio controlled electric models. Their models fell under the broad category of "park flyers", and they were made from a molded foam similar to Depron. They had sport models with names like Crazy Sparrow, Chubby Lady, Bumblebee, and Sky Beetle, as well as a large selection of scale models of WWII airplanes from both Allied and Axis powers. Popular in America when I was active in the hobby, I understand the company folded after a factory fire in 2012 wiped out their equipment and inventory.
I had the Sky Beetle - which my daughter crashed when I let the kids try their hand at flying - and the Chubby Lady biplane, which you see here. I don't recall why I removed the guts from the airplane and put it on display hanging from the ceiling of my workshop, but I'm guessing it was GAS, and I moved the electronic parts to a new model. I have from time to time considered reinstalling some gear I have laying around and going out flying, but this is a very light model and requires calm or very light wind.