Nicolas Castres Saint-Martin

Certifer SA provides specialized railway and urban transportation services. The company was founded on April 3, 2014 and is headquartered in Valenciennes, France.

Part of Alstom SA, ALSTOM Transport Technologies SAS is a major player in the mobility sector, providing solutions for security and fluidity to passengers and operations. The company is based in Saint-Ouen, France, and has 13 sites across the country, contributing to the vibrancy of local economies. With 9,000 employees, ALSTOM offers expertise to serve French and international clients, focusing on supplying rail vehicles such as metros, tramways, and regional trains, as well as digital signalling systems for safe and performant railway networks. ALSTOM's mission is to support the transition towards sustainable transport systems that are inclusive, environmentally friendly, safe, and efficient while implementing a socially responsible business model. The CEO of the French company is Dominique Bazi.

Part of Alstom SA, Centre d'Essais Ferroviaires SA is a railway test center and laboratory that offers dynamic and static testing, workshops, climatic and acoustic chambers, and logistical services. The company is based in Petite-Foret, France and was founded in 1998. The French company provides efficient tools and is a privileged partner for test programs, offering a reference structure of skills at the service of innovation. The company has a range of services available for infrastructure and are adaptable to the needs of their customers. The CEO is Emmanuel Chouffier.