Every major industry sponsors annual trade shows exhibitions where man ufacturers, dealers, and buyers get together for demonstrations and discussion. More than 9,000 industrial, scientific and medical shows are held in the United States each year, and many companies exhibit at more than one show. Trade shows are also very important for global marketers, since they may be the only place where an advertiser can meet the company's major international prospects at one time. Moreover, some of the world's largest trade shows (the Paris Air Show, for example) are held overseas.