Hartmut Müller

Wieland-Werke AG engages in the production of non-ferrous semi-finished products. Its product portfolio includes strip and sheets, rods and sectional rods, wire and sectional wires, tubes and finned tubes, heat exchangers, slide bearings, and components. The firm also offers solutions for heat transfer, fish farming, e-mobility, and engineering properties optimization. The company was founded in 1820 and is headquartered in Ulm, Germany.

Grammer Interior Tianjin Co., Ltd. is a private company that manufactures motor vehicle parts and accessories. The company is based in Tianjin, China.

Part of Ningbo Jifeng Auto Parts Co., Ltd., Grammer Mexicana SA de CV manufactures aluminum headers for the automotive industry.

Part of Ningbo Jifeng Auto Parts Co., Ltd., Grammer Automotive Puebla SA de CV develops and manufactures seating systems and seat components. The company is based in Querétaro, Mexico.

Part of Ningbo Jifeng Auto Parts Co., Ltd., Grammer Koltuk Sistemleri Sanayi VE Ticaret AS is a Turkish company that manufactures fabricated metal products. The company is based in Bursa, Turkey.

Part of Ningbo Jifeng Auto Parts Co., Ltd., Grammer Interior (Changchun) Co., Ltd. is a Chinese company that manufactures and distributes automobile parts, transmission and power train components. The company is based in Changchun, China.