At ONYX Clean Tech Solutions, American workers build some of the best commercial-grade propane-powered floor burnishing, stri ... pping and polishing equipment in the industry. From engineering and testing to assembly, we do it all from our headquarters in North Carolina. When you're using an ONYX machine and you'll feel the quality, the strength, and the pride of American craftsmanship. We continue to lead in the innovation of new propane-powered machinery for the construction and agriculture sectors. We are dedicated to building the best propane engines available, engineered, and assembled in the USA. read more