Madison Industries | Modular Buildings, Metal Canopies Madison Industries is the source for Innovative Metal Products and Structures. From studs to transportable rigid framed structures, we excel in quality and service for convenience stores, carwashes, h Madison Industries, Inc. of Georgia was established in 1962 to serve the Major Oil Companies in building their retail facilities. We started with 10,000 Square Feet, and today, our plant has over 350,000 Square Feet of production and office facilities.