Heidelberg Opens Manufacturing Plant in Detroit: Five years after introducing Saphira Aqueous Coatings to the market, Heidelberg recently began manufacturing the coatings locally at its new Hi-Tech Coatings plant, located in the Detroit suburb of Taylor, MI. A ribbon-cutting ceremony to mark the opening was held Aug. 30. The plant has been in production for several months. Hi-Tech Coatings International, Ltd. is a wholly owned subsidiary of Heidelberg Druckmaschinen.