Vicon Machinery, LLC, Where Superior Duct Work Begins. Vicon's product line encompasses Precision HVAC Cutting and Roll Forming systems with patented features and innovative solutions to meet your manufacturing needs. 100% designed, manufactured and supported in the U.S.A., the state-of-the-art machinery combines accuracy and speed while reducing manufacturing cost and material waste. We build the machines, we support the customer, it's that simple.