Seriously – our imaginations, and requests from users – but we know what you meant. As a “system integrator,” we take technologies from all over the world to make the very best lasers we can at their price point, so there is really no one answer. Many of our components come from local vendors right around us in the Washington, DC metro area, or elsewhere in the U.S. Everything else is sourced from vendors in Europe, Asia, Australia and Canada. Everything comes together in our shop, is carefully integrated, tested to death and then shipped to you. It sounds so simple right?