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Version vom 9. Dezember 2021, 12:59 Uhr von Englisch uebersetzung (Diskussion | Beiträge)
The length of the first channels corresponded to the previous asbestos cement channels. They had a wall thickness of 15 mm. In autumn 1970, the production of ACO Drain NW100 could be completely converted to polymer concrete. The material used in the early days - fibre or asbestos cement – became obsolete.
