Kelly Services, Inc. (formerly Russell Kelly Office Service and Kelly Girl Service, Inc.) is an American office staffing and workforce solutions company that operates globally. The company places employees at all levels in various sectors including the financial services, information technology, and law industries. It also offers professional services, including human resource and management consulting, outsourcing, recruitment, career transition, and vendor management services. Kelly Services was founded by William Russell Kelly in 1946 and is headquartered in Troy, Michigan. In 2015, the company reported 8,100 employees, $5.5 billion in revenue, and placed 550,000 employees to work in positions in various sectors, making it one of the world's largest staffing firms.

Iron Mountain Inc. (NYSE: IRM) is an American enterprise information management services company founded in 1951 and headquartered in Boston, Massachusetts. Its records management, information destruction, and data backup and recovery services are supplied to more than 220,000 customers throughout North America, Europe, Latin America, Africa, and Asia. As of 2016 over 94% of Fortune 1000 companies use Iron Mountain's services to store and manage their information.

Iron Mountain is a component of the S&P 500 Index and a member of the FTSE4Good index.

Invesco Ltd. is an American independent investment management company that is headquartered in Atlanta, Georgia, United States, and has branch offices in 20 countries. Its common stock is a constituent of the S&P 500 and trades on the New York stock exchange. Invesco operates under the Invesco, Trimark, Invesco Perpetual, WL Ross and Powershares brand names.

Omnicom Group, Inc. is an American global marketing and corporate communications holding company, headquartered in New York City.

Omnicom's branded networks and specialty firms provide services in four disciplines: advertising, customer relationship management (CRM), public relations and specialty services. The services included in these disciplines are media planning and buying, digital and interactive marketing, sports and events marketing, field marketing and brand consultancy. Omnicom Group was ranked as one of the four largest advertising agencies in the world by The New York Times in 2002. In 2014, Omnicom was considered the second largest advertising holding company by The Wall Street Journal. The company employs more than 74,000 employees in about 100 countries worldwide.

Publicis Groupe is a French multinational advertising and public relations company, and is the oldest and one of the largest marketing and communications companies in the world, by revenue, headquartered in Paris.

After 1945 the little-known Paris-based advertising agency grew rapidly, becoming the world's fourth-largest agency. It was a leader in promoting France's post-war economic boom, especially the expansion of the advertising industry; it was successful because of its close ties with top officials of the French government, its clever use of symbols to promote itself, and its ability to attract clients from widely diverse growing industries.

It is now one of the "Big Four" agency companies, alongside WPP, Interpublic and Omnicom. Publicis Groupe S.A. is presided by Arthur Sadoun, and its agencies provide digital and traditional advertising, media services and marketing services (SAMS) to national and multinational clients.

WPP plc is an English multinational advertising and public relations company with its main management office in London, England, and its executive office in Dublin, Ireland. It owns a number of advertising, public relations and market research networks, including IMRB, Millward Brown, Grey, Burson-Marsteller, Hill & Knowlton, JWT, Ogilvy & Mather, TNS, Young & Rubicam and Cohn & Wolfe. It is now one of the "Big Four" agency companies, alongside Publicis, Interpublic Group of Companies and Omnicom. WPP has a primary listing on the London Stock Exchange and is a constituent of the FTSE 100 Index. It has a secondary listing on NASDAQ.

The Interpublic Group of Companies, Inc. (IPG) is a publicly traded advertising company.

The company consists of three major networks: McCann Worldgroup, Lowe and Partners, and FCB. Its media agencies are bundled under the IPG Mediabrands entity. It also owns a number of specialty agencies, including public relations, sports marketing, talent representation, and healthcare. It is now one of the "Big Four" agency companies, alongside WPP, Publicis and Omnicom. Michael Roth is the current CEO.

Interactive Brokers LLC (IB) is a U.S.-based electronic brokerage firm. It is the largest U.S. electronic brokerage firm by number of daily average revenue trades, and is the leading forex broker. The company brokers stocks, options, futures, EFPs, futures options, forex, bonds, funds and CFDs. Interactive Brokers also services commodity trading advisors (CTAs), making it the fifth-largest prime broker servicing CTAs.

Hamilton Exhibits was founded as Hamilton Display Manufacturing Company in January 1947 by Renzie Hamilton and his father-in-law, Sterner Faussett. Hamilton Exhibits designs and manufactures exhibits, visual media, and interiors.

Group O, Headquartered in Milan, Illinois, is one of the largest Hispanic-owned companies in the U.S. and a provider of managed products and services, specializing in Marketing Services, Print Management, Business Analytics, Decision Sciences, Business Process Outsourcing, Managed Services, Packaging, Supply Chain and Third-Party Logistics (3PL). Founded in 1974, Group O has grown to approximately 1,500 employees across 34 U.S. facilities. The company targets a broad range of industries, including: food and beverage, telecommunications, manufacturing, consumer packaged goods, financial services, pharmaceutical, health care, retail and technology.

Otis is the world's largest manufacturer and maintainer of people-moving products, including elevators, escalators and moving walkways. Founded more than 160 years ago by the inventor of the safety elevator, Otis offers products and services through its companies in more than 200 countries and territories, and maintains approximately 1.9 million elevators and escalators worldwide. Otis is a unit of United Technologies Corp., a leading provider to the aerospace and building systems industries worldwide.

Altera Design Studio is a multidisciplinary design firm, focusing on product, activity and space design. We work for firms in various sectors. We reconfigure the design process, from the concept stage to the production stage, according to the needs of each sector. In addition to our intensive work in the Lighting, Home and Office Furniture, Furniture Accessories, Building Components and Medical sectors, we occasionally design for Kitchen Utensils, Toys and Packaging sectors. Arlight, Heper Group, Lamp83, Üzümcü Medical, Çebi Kilit, Hakart, Çetin Plastik, Procter&Gamble, Fy Mobilya, Işık Oyuncak, Star Plastik and Duş'al are among the firms for which we provide design and consulting services.

Our preferences are based on the vision and the design understanding of the firms we work for, rather than the sector they are in. Our vision is to create products that combine artistic concepts such as authenticity, emotion, imagination and aesthetics, with technical concepts such as ergonomics, technology, manufacturability and marketability, in all our products. It is very important that the firms we work for have a similar understanding.

In terms of sectors, I could say that the lighting sector is where we get the highest demand for our services. Both the dynamic structure of this sector due to the developments in LED technology, and our national and international achievements in this field, lead us to concentrate on lighting. We received a total of 24 national and international awards, including A’Design Award, Design Turkey Superior Design Award and Good Design Award, with our lighting, home and office furniture, furniture accessories and kitchenware projects. These prize winning projects increased our market recognition and therefore we mostly work in these sectors.