Mike Johnson, sales and marketing manager with Johnson System, Inc., discusses the company's product offerings at the 2012 GEAPS Exchange held in Minneapolis, MN. Johnson System, Inc. is a structural steel manufacturing with a focus in the agricultural industry. JSI has a full line of products and custom design options. JSI manufactures towers, catwalks, temporary storage systems, aeration systems, super structures, decks, stair systems and numerous other agricultural products.