Butane and Propane
These folks say: Butane-Propane News (BPN) is a leading business publication for propane distributors, marketers, suppliers, and other leaders allied to the industry.
I don’t doubt that, but I would also suggest that selling hydrocarbons might not be the place to be as we move through the 21st Century. Concerns about climate change and the electrification of everything may pose a serious impediment to your success.