1992 CENSUS OF RETAIL TRADE =>WHAT IS RETAIL TRADE Retail Trade, Standard Industrial Classification (SIC) major groups 52 through 59, includes establishments engaged in retailing merchandise, generally without transformation, and rendering services incidental to the sale of merchandise, such as installation and repair services. There are two types of retailers: store and nonstore retailers. Store retailers attract a high volume of walk-in customers. In general, retail stores have extensive displays of priced merchandise and use mass-media advertising to attract customers. They typically sell merchandise to the general public for personal or household consumption, but some also serve institutional or industrial and business clients. However, establishments that sell their products only to institutional or industrial clients and to other wholesalers, and establishments that sell similar merchandise for use exclusively by business establishments are classified in wholesale trade. Nonstore retailers, like store retailers, are organized to serve the general public but their retailing methods differ. Nonstore retailers reach customers and market merchandise through infomercials, direct- response advertising, paper catalogs, direct telephone solicitation, door-to-door solicitation, in-home demonstration, temporary display of merchandise, and the use of vending machines.