GUARDIAN Industriesis a privately-held industrial manufacturer of glass, based in Auburn Hills, Michigan. Giving its customers a break would never occur to Guardian, one of the world's largest glassmakers. With more than 60 facilities on five continents, it primarily produces float glass and fabricated glass products for the automobile and construction markets. It also makes architectural glass (mirrors), fiberglass, and automotive trim parts. Through its Guardian Building Products, the company operates one of largest building supply distribution centers in North America. www.guardian.com

DuPont offers an industry-leading selection of laminated glass solutions. Each features advanced laminated glass technology that can increase safety, reduce noise, help save energy, add privacy, protect property or expand design and engineering options. www.dupont.com

Pilkington is one of the world's largest manufacturers of glass and glazing products for building, automotive and related technical markets. The Group has annual revenues of Ј2.8 bn, manufacturing operations in 24 countries on five continents and sales in 130 countries, employing around 23,900 people worldwide. Founded in 1826, Pilkington is recognised as the world's technological leader in glass. With its associates, Pilkington has the widest geographical reach and market leadership positions in the Building Products and Automotive OE and Automotive Glass Replacement (AGR) sectors. www.pilkington.com

KELLER AG was founded in 1980 and specialises in the production of individually designed high-quality home conservatories and high-tech solutions in the area of contemporary architecture. The company premises in Troisvierges (Grand Duchy of Luxembourg) cover an area of 6,800m² of production and storage facilities plus a 1000m² showroom. Here, over 80 staff supported by ultra-modern computer-controlled machines perform extremely precise work down to the last millimetre. Keller AG continues to expand and is now represented through a large network of distribution partners across Europe.Keller has been authorized to use the "Made in Luxembourg" since 1994. www.kellerag.com www.minimal-windows.com

RAICO Bautechnik GmbH develops and distributes high-quality glazing systems for curtain walls aluminium windows, and conservatories. The products THERM+, FRAME+ WING and CLIMA set the standard is designing curtain walls, windows, and conservatories. RAICO is a technology leader in the industry, with long-term experience in metal engineering. Our comprehensive portfolio of innovative products and services enables us to fully meet customers' manifold needs and individual requirements. www.raico.de

The building up of the Würth Group is the life's work of Professor Reinhold Würth, and one of the outstanding business success stories in post-war German history. The core business of the Würth Group is the worldwide sale of fixing and assembly materials, including screws, screw accessories, dowels and plugs, chemical products, furniture and construction fittings, tools, and stockkeeping and picking systems. Subject matter of the business activity of the Würth Group the wholesale of electrical installation material, data systems and network technology, lighting and light fittings, household appliances, home electronics and a wide range of multimedia products. www.wuerth.com