About. Helping companies generate sales, promote brand awareness, and recognize employees Company Overview For over 23 years, Rainbow Advertising has successfully delivered brand building ideas that generate awareness, sales, employee recognition, and corporate identity. We have a successful track record of delivering promotional and specialty merchandise. We have become the preferred provided for many well known companies and small businesses by focusing on our customer's individual needs. Description Rainbow offeres embroidery, silk screening, printing and engraving on over 600,000 items in addition to our top-quality merchandise, fast turn around and price. Let our expert sales and marketing team help you select the right product for your next program or project.