Based in Wiesbaden, SGL was once owned by the Hoechst chemicals company and is currently Europe's sole manufacturer of carbon fiber materials.
西格里碳素集团位于威斯巴登，曾属于郝斯特化学工业公司，现在是欧洲唯一的碳纤维材料生产商。
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Though Hoechst, once the local chemical giant, was absorbed into sanofi-aventis of France in 1999, its Frankfurt site still churns out polymers, pigments and pharmaceuticals.
Ciba has developed a nitrite feed rate gauge system for controlling process of continuous diazotization by polar voltage method, and Hoechst has developed newly an equipment for continual coupling.