Hans-Dieter Mertens (1943) became a Senior Advisor to Halder for the Asia-Pacific region in November 2011. He started his career in 1965 at Krupp Stahlexport GmbH, the steel company’s product trading firm, and moved on to IWKA Industrieanlagen GmbH where he served as Department Head for the machinery and industrial equipment sales in 1970. In 1974, his career took a decidedly international turn when he joined Beton- und Monierbau AG, a building and engineering firm, to focus on international sales of turn-key plants. After working for Franz Kirchfeld GmbH, part of industrial conglomerate Gutehoffnungshütte (GHH), in a comparable position, he returned to IWKA AG in 1986 as Managing Director of the Far East Liaison Office in Hong Kong and, starting in 2004/5, IWKA Asia Pacific Ltd. From 1986 to 2005 he successfully built up sales structures and founded several JV- and subsidiary companies in China.
Hans-Dieter Mertens was a member of the Advisory Board of VAG Holding GmbH in Mannheim until August 2011. Currently, he is Chairman of the Board at VAG Water Systems (Taicang) Ltd., China, and a member of the Board of Oystar China Ltd., Shanghai, China.