Sales representatives are an important part of manufacturers’ and wholesalers’ success. Regardless of the type of product they sell, their primary duties are to interest wholesale and retail buyers and purchasing agents in their merchandise, and to address any of the client’s questions or concerns. Sales representatives represent one or several manufacturers or wholesale distributors by selling one product or a complimentary line of products. Sales representatives also advise clients on methods to reduce costs, use their products, and increase sales. They market their company’s products to manufacturers, wholesale and retail establishments, construction contractors, government agencies, and other institutions.