Ryan Consultants & Designers. The company specializes in civil works and environmental and energy projects for such government and commercial clients as the U.S. Navy, the U.S. Army Corps of Engineers, and MACTEC. It also handles energy conservation and communications projects. The women-owned and Hispanic-owned firm and has California offices in Los Angeles, Sacramento, San Diego, and San Francisco; it also has operations in Alexandria, Virginia. President and CEO Wanda M. Martinez, who named the enterprise after her nephews, owns the firm, which she launched in the 1980s.

Rooftop Systems Inc. has grown to be the leading manufacturer of Commercial Air Conditioning Accessories in the industry. Established in 1983, RRS has grown from a 22,000 square foot shop to a 250,000 square foot automated production facility. We specialize in providing the highest quality products at a competitive price. We ship worldwide to a variety of customers that include Original Equipment Manufacturers (OEM), National Accounts, and Wholesale Distributors. Our ultimate customer is the installing contractor for the product, and we design every product with them in mind.

Hunter Plastics are based in South East London and employ over 250 people, who are all dedicated to industry leading and award winning customer service. We have built a strong worldwide reputation as a manufacturer of high quality above and below ground products - all manufactured using a quality management system complying with BS EN ISO9001:2008 and BS EN ISO14001:2004 Through manufacturing excellence, Innovations and Synergies, Hunter focuses on ‘added value products' - such as Grease Management and Concealed framed bathroom systems, that enable our stockist and distributors to gain profitable sales in their local markets.

Nikken Sekkei has its origins in a building design company founded in 1900 as part of Japan's Sumitomo conglomerate. Now a private corporation partly owned by its employees, Nikken Sekkei has completed more than 20,000 projects in some 40 countries. The group provides architectural, engineering, urban planning, interior design, and consulting and management services. Among its projects is the Saitama Super Arena and Jumeira Gardens -- a master planned city in Dubai. Nikken Sekkei has also designed terminals for Tokyo International Airport and built hotels, city halls, hospitals, and office buildings throughout Japan and beyond.

Seddon Homes, a speculative housing subsidiary of privately held construction group Seddon Group Limited, builds residences from one and two-bedroom apartments to three-story luxury homes primarily in the Cheshire area of England. The company develops brownfield and greenfield real estate and also refurbishes homes. Seddon Homes delivers about 100 homes annually. The homes generally cost from 135,000 to more than 450,000. The company got its start back in 1897 when brothers George and John Seddon established a building firm in Little Hulton, Manchester.

Waste Recycling Group is the UK's largest waste disposal firm. It operates landfills and recycling facilities that handle more than 13 million metric tons of domestic, commercial, and industrial waste a year. The group operates more than 60 landfills and 90 recycling and transfer stations. It also operates quarries, a network of household waste recycling sites and about 20 green-waste composting sites. In 2006 the company was acquired by Fomento de Construcciones y Contratas S.A. one of Spain's largest construction groups.

Parsons provides engineering, construction, and management services for corporate, industrial, institutional, and government projects all over the world. It designs and builds power plants, dams, commercial buildings; provides environmental remediation services including hazardous materials cleanup; and adds improvements to airports, rail systems, bridges, and highways. Its Commercial Technology unit serves corporate and government clients with a wide variety of capabilities including design, development, management, and support services. Other units include Parsons Water & Infrastructure, Parsons Infrastructure & Technology, and Parsons Transportation. The employee-owned group was founded in 1944.

Day & Zimmermann offers services as distinct as day and night. Its family of companies provides engineering and construction, design, plant maintenance, security, staffing, munitions decommissioning, validation, and asset management services worldwide. A top global contractor, Day & Zimmermann provides operations, contract support, and maintenance services to US and foreign governments, as well as commercial customers. Its Day & Zimmermann NPS unit maintains half of the US's nuclear plants. Staffing subsidiary Yoh Services specializes in filling IT, engineering, and health care positions. Founded in 1901, Day & Zimmermann is owned and managed by the Yoh family, which has headed the firm for three generations.

Insituform Technologies, Inc. company and its subsidiaries provide trenchless technologies for rehabilitating and protecting sewers, water lines, oil pipelines, and other industrial pipes, serving municipalities and industries worldwide. Insituform's cured-in-place pipe process (which accounts for about 60% of the company's revenues) allows for pipe rehabilitation without digging or disruption. The company also offers other pipe rehabilitation and corrosion protection services. Insituform increasing is pursuing project management work that includes the construction, replacement, and rehabilitation of large pipeline systems.

Baldwin & Shell Construction's natural state is as a construction firm in The Natural State. Founded in 1946, Baldwin & Shell is a general contractor and commercial construction management company operating primarily in Arkansas. The company's services include general construction, project management, and renovation and remodeling, as well as assembly of prefabricated steel buildings. Its completed projects, many of which are located in Little Rock, include high schools, churches, industrial plants, office buildings, and hospitals.

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