Aurora Circuits is the oldest PCB Manufacturer in the United States Of America. It was founded as a Graphic Screen Printing Company in 1938. DBA Kalmus and Associates. As technology developed companies such as Zenith, RCA, and Motorola needed the advanced capabilities that printed circuit cards would offer. Aurora played a major role in the development of the printed circuit card. Aurora is a US Manufacture located in Aurora Illinois and is a major source for printed circuit boards to the automotive industry. Aurora has re-tooled and is now becoming a major player in the Thermal Management portion of the LED lighting industry. Capabilities of flexible metal circuit boards as well as the ability to etch Heavy Copper up to 20 oz. As a note: In the past 10 years Aurora Circuits has successfully etched over 800 tons of copper for the PCB industry with no environmental impact due to successful capture of all process related effluent. Aurora Circuits is always open and ready for a customer visit at any time. Please contact me and I will make sure you are properly greeted and escorted during your visit. 630-978-3830 Thank you from the Aurora Circuit Team