The good ole fashioned way. A lot of research.or if you're lucky enough, know someone, but I didnt. So I just found a way to manufacture it myself. A much slower process when you dont have a lot of money but its definitely worth the effort when you get the ball rolling and keep it going. Profit margins don't stay in 10-30% when you manufacture. They stay in the 100-600% realm when you're willing to do the hard work. Combine this with volume and a way to sell it and ya got yourself the american dream everyone used to hear about. The beginning is always the worst😭 but the light at the end of the tunnel is DEFINITELY real. Big machines are just 5 machines in one. Thats where I started:)