The company is Modelfly...

Here's a review where a guy has been through three of these and had bad results with the plastic screw.

http://www.flyingsites.co.uk/reviews/arcbeaver.htm

If you get your hands on a Beaver, a model introduced later than the Jupiter, you'll see that Modelfly has incorporated the changes to the wing saddle and firewall.

The Jupiter is my windy day plane. Nothing to write home about. Build and fly yours how you want (LOL).