Sebastian Koehler

Wieland Roessler Beteiligungsgesellschaft mbH provides administration and management services. The private company is based in Kaufbeuren-Neugablonz, Germany. The German company was founded in 1977. Sebastian Koehler has been the CEO of the company since 2019.

Wieland Metals, Inc. manufactures alloy and metal products. It produces flat rolled copper and copper alloy strip. The company is headquartered in Wheeling, IL.

Global Brass & Copper Holdings, Inc. engages in the conversion, fabrication, processing, and distribution of specialized non-ferrous products. It operates through the following segments: Olin Brass; Chase Brass and A.J. Oster. The Olin Brass segment fabricates, manufactures and converts copper and brass sheet, strip, foil, tube and fabricated components. The Chase Brass segment produce brass rod, in round, hexagonal, and other shapes, ranging from 1/4 inch to 4 1/2 inches in diameter. The A.J. Oster segment focuses in the process and distribute copper and copper-alloy sheet, strip, and foil. The company was founded on October 10, 2007 and is headquartered in Schaumburg, IL.