Fastenal Company, together with its subsidiaries, operates as a wholesaler and retailer of industrial and construction supplies. It offers fastener product line under two categories, which include threaded fasteners, such as bolts, nuts, screws, studs, and related washers that are used in manufactured products and building projects, as well as in the maintenance and repair of machines and structures; and miscellaneous supplies, including paints, various pins and machinery keys, concrete anchors, batteries, sealants, metal framing systems, wire rope, strut, private-label stud anchors, rivets, and related accessories.

Duro-Last began in 1978 with the simple need to find a roofing system that worked. Existing roofing systems presented a common problem - they required ongoing maintenance and continual expense, with no long-term solution in sight. John R. Burt, used his experience in fabricating pool liners to develop a remarkable new roofing membrane. Two years of additional testing resulted in the proprietary membrane formula still in use today.

Smith Management Construction, Inc. (SMCI) provides general contracting and construction management services for office, retail, multifamily residential, and institutional projects ranging from commercial interiors and renovations to new construction in the Baltimore/Washington, DC corridor. Its clients have included the Kennedy Center for the Performing Arts, the University of Maryland, and the US government. Together, president and COO Frederick "Rick" Wrieden and company vice presidents Ann Kerns Bowley, William Kirten, Robert Pronier, and Frank Talbot own SMCI.

MACTEC provides a full range of infrastructure and environmental engineering services to federal agencies, municipalities, transportation, energy, and industrial customers, including construction management and facilities operation and management. A specialist in hazardous waste cleanups, the group provides decommissioning and demolition of nuclear facilities and remediation of brownfield sites. MACTEC, which has grown dramatically through acquisitions, operates 80 locations throughout the US. Founded in 1975 as Management Analysis Company (MAC), MACTEC is majority-owned by private equity firm Nautic Partners.

China Dredging Group isn't interested in digging up the past. It's focusing on the future as a public company and a provider of dredging contracting services designed to keep China's waterways clear and navigable. Operating through Chinese subsidiary Fujian Service, the group is a British Virgin Islands incorporated company that was formed in 2010 and subsequently filed to go public. With engineering and project management expertise, its services cover onsite inspection, cost estimation, sediment and obstruction removal, and transport and disposal of dredged material. It typically serves as a subcontractor for large, state-owned enterprises that act as general contractors on port infrastructure projects.

Koppers Holdings treats wood right. The company makes carbon compounds and treated-wood products for the chemical, railroad, aluminum, utility, construction, and steel industries around the world. Its carbon materials and chemicals unit makes materials for producing aluminum, polyester resins, plasticizers, and wood preservatives. The railroad and utility products unit supplies treated crossties and utility poles and treats wood for vineyard, construction, and other uses. Koppers Holdings owns 50% of KSA Limited -- subsidiaries of Heidelberg Cement own the other half -- which produces concrete crossties. The company's manufacturing facilities are located in Asia, Australia, Europe, and North America.

Tata Group comprises more than 90 companies with activities ranging from manufacturing and chemicals to consumer products and business services. Its Tata Steel unit is India's largest private steelmaker, while Tata Power is the nation's largest private power utility. Tata Motors makes the world's most inexpensive car -- the Nano -- and owns the Land Rover and Jaguar automobiles. Other units include Tata Communications (international telephone network services), Tata Consultancy Services (outsourced business services), and Tata Global Beverages (one of the top tea producers and owner of the venerable Tetley brand). Tata Group is managed through holding company Tata Sons.

Thermador Groupe doesn't mind being the middleman. Through subsidiaries, the company imports and distributes building materials and equipment to heating, plumbing, and construction wholesalers and to do-it-yourself stores throughout France. Products handled by Thermador Groupe include residential and industrial pumps, valves, and fittings, central-heating installation products, and plumbing fixtures. The company, which was founded in 1968, also distributes components for boilermakers.

Permasteelisa Group is a worldwide leading Contractor in the engineering, project management, manufacturing and installation of architectural envelopes and interior systems. The Group brings its Know-How and expertise to all projects, in particular when dealing with Special Features Buildings, beginning with the design development phases all the way to the successful completion, achieving the customer's expectations.Present in four continents, the Group yearly generates a total turnover of around 1 billion euro.

W.S. Bellows Construction provides construction and project management services for commercial projects in the US Southwest, primarily in Texas and Louisiana. Among the company's notable projects is work on the San Jacinto Monument near Houston in 1936. Recent projects include the renovation of River Oaks Baptist Church in Houston. Founded in Canada in 1914 by Warren S. Bellows, the company is now led by his grandson, Tom Bellows.

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