The 1st generation; Josef Blanche & Jakob Blanche started in the 1960's as pioneers in Water Engineering Industry at former market leader PASSAVANT-WERKE, Michelbacher Hütte AG, Aarbergen, Germany.
BLANCHE - BCM emerged from the parental BLANCHE & SOEHNE WATERENGINEERING GmbH which was internationally active from 1985 to 1998 as representing agency and design firm for the companies
PASSAVANT-Werke AG and it's later sister company ROEDIGER ANLAGENBAU GmbH.
BLANCHE - BCM ist aus der BLANCHE & SOEHNE WATERENGINEERING GmbH hervorgegangen welche von 1985 bis 1998 als Handelsvertretung und Planungsbüro für die Firmen PASSAVANT-Werke AG und ihrer späteren Schwesterfirma ROEDIGER ANLAGENBAU GmbH international aktiv war.