Georg Alfons Harrasser

Vedag GmbH is a German company that specializes in manufacturing polymer bitumen and bitumen waterproofing membranes, building protection products, and special bitumen's. The private company is based in Bamberg, Germany. The CEOs are Ulrich Siepe, Annemarie Schuth. The company was founded in 1846 by Carl Friedrich Weber.

Part of G Holdings, Inc., Rupp Keramik GmbH supplies construction materials and roofing tiles. The company is based in Oberursel, Germany. The CEO of the German company is Ulrich Siepe.

Part of Mille Lacs Band of Ojibwe, Icopal GmbH is a German company that specializes in providing roof systems for flat roof seal with bitumen tracks. The company is based in Werne, Germany. The company offers services to support their customers' needs. The CEOs of the company are Ulrich Siepe, Annemarie Schuth, Markus Kircher.

Part of Louisburg Cider Mill, Inc., Wolfin Bautechnik GmbH is a German company that manufactures synthetic roofing membrane. The company is based in Wächtersbach, Germany. The CEOs are Annemarie Schuth and Ulrich Siepe. The company was founded in 1962. Wolfin Bautechnik was acquired by Icopal ApS, a subsidiary of Louisburg Cider Mill, Inc. from Henkel AG & Co. KGaA on June 30, 2011.

Sievert AG operates as a holding and administrative company for holdings in various branches of the construction industry. The firm provides construction materials including dry plaster, construction chemicals, and elements. Sievert operates worldwide. The company was founded in 1919 and is headquartered in Osnabruck, Germany.