Trade shows, conferences and exhibitions are public gatherings used to present and discuss information about a specific field or the products and services of a particular industry segment

Trade show, conference and exhibition support services design trade show booths, product exhibits, and supporting marketing materials. They also register companies for events, perform setup and teardown activities, and manage logistics

Promotional products are giveaways and advertising supplies used to promote a brand, logo, company or new product. Promotion services providers design and produce the promotional products.

Equipment auctions and trading services provide used equipment at discount prices. Products range from laboratory instruments to earth-moving equipment. Auction businesses sell equipment using bids. They also buy and trade equipment

Trade organizations and professional societies develop and provide standards, information and training to improve and/or promote an industry segment

Furniture consists of seating, benches, tables, cabinets and chairs for indoor or outdoor applications.

Trade journals, books and technical publications focus on a specific field or industry segment with regard to engineering, science, or technology

Audio visual service providers design, integrate, and install multimedia equipment for corporate, production, and broadcasting applications.

Codes, standards and regulations are developed, maintained, and promoted by regulatory agencies, engineering societies, and trade organizations

Carrying cases and equipment cases protect contents from impact, shock, vibration, rain, and dust.

Broadcasting, studio and theatrical equipment, supplies and services includes video production consoles, theatrical lighting, theatrical curtains, and related products and services.

Specialty or proprietary products and accessories related to cabinets, racks and enclosures.

Government agencies and laboratories provide standards, regulations, business statistics, research, funding and technical information. Examples include the FDA, FCC, OSHA, FTC, NSF, NTIS, NASA and USDA.

Display and point of purchase (POP) services provide retailers and consumer goods manufacturers with displays, signs, racks, merchandise tables, store fixtures, storefronts and other materials to market products to consumers.

Audio switch matrices are electronic switching instruments for interfacing audio signals in scanning, recording and analysis systems.