Quanex Building Products Corporation provides engineered products and aluminum sheet products. Its Engineered Products segment produces window and door components for original equipment manufacturers that primarily serve the residential construction and remodeling markets. This segments products consist of insulating glass spacer/sealant systems, thin film solar panel sealants, window and patio door screens, aluminum cladding and other roll formed metal window components, thresholds and astragals, moldings, residential exterior products, engineered vinyl and composite patio doors, window profiles and custom window grilles, and trim and architectural moldings in various woods primarily for the home improvement and residential construction markets.

SubZero Constructors provides specialty contracting services for the refrigerated storage industry. The company operates through two divisions that have specialty areas of operation in thermal construction and industrial refrigeration. The company's thermal construction division specializes in building cold storage distribution and food processing facilities, while its industrial refrigeration division builds cooling systems. SubZero Constructors provides services nationally and has offices in Lake Forest, California (near Los Angeles) and Woodstock, Georgia (near Atlanta). President Dean Soll founded SubZero in 1997.

Parsons Brinckerhoff (PB) is spreading its gospel around the world. A leading transportation engineering firm, the company provides planning, design, construction management, and consulting services for infrastructure projects in about 80 countries worldwide. Organized into three divisions (the Americas, international, and facilities), PB specializes in transportation projects but also works in the environmental, water, energy, urban development, and telecommunications sectors. Founded in 1885 by William Barclay Parsons, the firm designed New York City's first subway. It operates from about 150 offices globally. UK-based construction giant Balfour Beatty bought PB in 2009.

Keltbray is driving its business right into the ground. The company and its various units offer specialized construction and civil engineering services such as demolition (including explosive and high-rise projects), pilings, excavation, groundwork, and drainage. Business unit Keltbray AWS performs soil remediation services, while Wentworth House Partnership specializes in structural engineering of concrete and steel facades. In 2010 Keltbray acquired Aspire Rail Consultants -- key in the development of its own rail unit. Formed in 1976, the Keltbray has performed work on such high-profile projects as the London Underground, the Royal Opera House, and Windsor Castle.

Royal Boon Edam has an open-door policy -- especially if you're in the market for a securely closed door. The company has been making revolving doors and security barriers for more than 100 years. It offers a wide range of customizable products including manual and automated revolving doors, specialty slide doors, and high-capacity turnstiles. Boon Edam also provides handicap access gates and high-impact-resistant vehicle barriers.

Hearth & Home Technologies believes home is where the hearth is. The HNI Corporation subsidiary makes and installs wood, gas, electric, and pellet fireplace and stove products under the Heat & Glo, Heatilator, and Quadra-Fire brands. The company, under the Fireside Furnishings name, also makes indoor hearth products, including mantelpieces, cabinets, shelves, and wall systems. Other products include outdoor fireplaces, barbeque grills, and electric fireplaces. The company sells its products mainly in the East and Midwest US.

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.

Fullmer Construction is full of ideas when it comes to commercial construction. The company, which does business as Fullmer Companies, provides commercial and industrial construction and reconstruction service in Southern California, including tenant improvements. Typical projects include industrial centers, airport facilities, and office/warehouse spaces. The company has built more than 2,000 buildings totaling about 98 million sq. ft. of space. Fullmer was founded in 1946; founder Leonard Fullmer still serves as a consultant to the family-controlled firm.

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.

The firm was founded by Scottish-born Henry Alexander, grandfather of chairman and CEO Patrick Alexander. Cold Spring Granite has been chipping away as a granite business since the late 1800s. The company operates about 30 granite quarries and five fabrication facilities in Canada and the US that produce 1.5 million net cube of granites per year for commercial, residential, and institutional use. Its granite products include floor tiles, countertop slabs, paving materials, and exterior building blocks; its Memorialization division makes upright monuments, bronze markers, urns, bases, and mausoleums. Cold Spring's granite can be found in national monuments, cemeteries, and the columns of Minnesota's state capitol.

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