Germany: Michael Ambros has been appointed as the managing director of KA Schmersal, part of the Schmersal Group. Ambros is responsible for the Administration and Sales & Marketing divisions on a global basis. Fellow managing director Michael Mandel will run the technical divisions alongside Ambros. The company’s management team includes both Ambros and Mandel, plus two managing shareholders, Heinz and Philip Schmersal. The Schmersal Group develops and produces a range of switchgear and control devices.

Mexico: Grupo Cementos de Chihuahua (GCC) has appointed Luis Carlos Arias Laso as its new Chief Financial Officer. Luis Carlos Arias has worked for GCC since 1996 in the Planning, Finance, and Corporate Treasury functions. He holds an undergraduate degree in financial administration and an MBA, both from the Tecnológico de Monterrey (ITESM). He is also a graduate of the senior management program of the Instituto Panamericano de Alta Dirección de Empresas (IPADE).

Dominican Republic: Alejandro Ramirez Cantu has been appointed as the president of Cemex Dominican Republic. Ramirez succeeds Carlos Emilio Gonzalez, who has held the position since 2011, according to the Diario Libre newspaper. Ramirez will also be responsible for the operations of Cemex in Bahamas and Haiti. He has worked for the building materials producer since 2000, managing operations in Thailand, Puerto Rico and Costa Rica.

Germany: Opterra, the German subsidiary of Ireland’s CRH, has announced a change of plant manager at its Karsdorf plant. Berthold Perschall, 50, will take over from Giuseppe De Donno on 1 June 2017. De Donno has been in the post since July 2015 and has left the company to pursue a new professional challenge.

Perschall has been with CRH (and Lafarge beforehand) since 2000. Before coming to the Karsdorf plant in 2009 he worked at Lafarge’s Sötenich and Wössingen plants. He was most recently the head of maintenance and production at Karsdorf.