Mackprang Holding was a conglomerate of automotive suppliers, logistics companies and agricultural trading companies. Following the spin-off and the separate sale of the other divisions in 2012, only the globally active plastics company Schlemmer GmbH remained in the holding company. Schlemmer develops and manufactures cable protection systems and related products primarily for the automotive industry, but also for other industrial sectors such as mechanical engineering and household appliance manufacturers.
The investment by Hannover Finanz provided Schlemmer with sufficient financial resources to continue its international expansion and pursue a stable course of growth. The company was sold in 2016 as part of a secondary deal.