HeadGrow
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It's not so much about where the capacitors, microchips, and other micro-components are made but more about how those parts are put together into proprietary circuits. (Ever try to find out how the protection circuits or anything works inside a ballast? cuz i haven't been able to find anything) Any company with a little electrical background could build a ballast that turns a light on. It takes the research and experience to know how to design the circuit to turn that bulb on and make it burn at peak efficiency at all times. Things have come a long way since magnetic ballasts. That's why some of the knock off cheap competitors might not be the best choice of ballast. But if they've been working for ya then more power to ya.