Kestrel is a brand originating from England, but owned by the French Deltalyo. Kestrel is a known manufacturer of many different tools for bodywork processes, including polishing machines. The most known one is probably the Kestrel DAS6 DA polisher.
Krauss Tools is a German manufacturer of several detailing and bodyshop related tools and machines. The company creates, sells and develops several different product under their own label and for other manufacturers.