Norbert Wiemers

RUETGERS Chemicals AG manufactures plastics, chemicals, and binding materials used in electronics and automobiles. It specializes in the manufacture of basic and specialty chemical products. The company manufactures industrial chemical products such as aromatics, petroleum products, organic intermediates, and pharmaceuticals. The company was founded in 1964 and is headquartered in Castrop-Rauxel, Germany.

Wilh. Werhahn KG operates as a holding company, which operates in the Building Materials, Consumer Goods, and Financial Services divisions. The Building Materials division offers products for road construction, roofs, and façades. The Consumer Goods division focuses on kitchen and body care items. The Financial Services division includes leasing, factoring, and vehicle financing. The company was founded by Peter Wilhelm Werhahn in 1841 and is headquartered in Neuss, Germany.