OBSTA, a subsidiary of CITEL group (www.citel.fr) is part of an industrial group that engineers, manufactures and sells obstr ... uction lights for transmission lines, telecom, broadcasting towers and all kind of obstacle to air navigation. more than 30 years. Or obstruction lights are manufactured by us based on ICAO annex 14 chapter 6 (International Civil Aviation Organization) recommendations and the FAA (Federal Aviation Administration). OBSTA has manufacturing facilities in France and has sales office located in France, Germany, USA, and China through Citel. read more