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RHI AG
RHI AG () is a Vienna-based Austrian company specialising in producing heat-resistant refractory products for the steel, cement, glass, lime and non-ferrous metals industries. The company has an annual producing capacity of 2 million tonnes of refractory products, making it the largest company in the world in this field of activity.〔(【引用サイトリンク】title=RHI AG )〕 The company employs around 7,700 people in 32 locations in 14 countries, with an annual turnover of approximately EUR 1.6 billion.
==History==
The company was founded in 1834〔http://www.rhi-ag.com/internet_en/rhi_group_en/history_channel_en/〕 by the brickyard and lime kiln owner Friedrich Ferdinand Didier (1801–1867) as the ''Chamottefabrik F. Didier'', at Podejuch, Pomerania (today part of Szczecin, Poland) in what was then Prussia. The company was one of the first in Europe to produce refractory bricks (chamotte) using quartz materials. By 1888 the ''Didier-Werke'', as it was later known, opened its own research and development division with the task of developing new heat-resistant materials. In 1932 the company officially adopted the ''Didier-Werke AG'' name and became a major producer of German refractory products.〔
The discovery of the fire-resistant properties of magnesite and magnesium carbonate gave a new boost to the refractory products industry in Europe, and especially in Austria, which had large magnesite deposits. In 1881 the German merchant Friedrich Albert Carl Spaeter (1835–1909) from Koblenz established magnesite works in Veitsch, Styria; followed by the ''Austro–American Magnesite Company'' at Radenthein, Carinthia in 1908 and ''Dolomite Franchi'' at Marone, Italy in 1919.
Activities abroad began with the 1990 acquisition of 50% of National Refractories of Oakland, based in Oakland, California.〔 In 1991 the company acquired a controlling stake in ''Veitscher Magnesitwerke AG'', its main Austrian competitor. In the same year the ''Dolomite Franchi'' company based in Italy was acquired by RHI AG. One of the most important company takeovers took place in 1994 when RHI bought Germany's ''Vedag Dachsysteme GmbH'' specialised in producing roofing materials which had production facilities in Slovakia, Czech Republic and Poland. After buying the majority of the ''Didier-Werke'' in 1995, the company had production facilities in Austria, Belgium, Canada, Chile, People's Republic of China, France, Germany, India, Italy, Mexico, South Africa, Spain, Turkey, United Kingdom and the United States.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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