Industry
Glass, Ceramics and Concrete Manufacturing, Rods and tubes, fused quartz or fused silica glass, Glass, cement and ceramics, Minerals, Fused quartz products, Quartz and silica electrothermal products, Glass beads, rods, tubes and bulbs, Stäbe, Quarzglaskomponenten für Halbleiterindustrieanlagen, Speziallampen