The core activity of Borne Jollien SA is the manufacture and distribution of granite boundary markers for marking boundaries and points, particularly in the field of land surveying and cadastral services. The markers are made of granite, hot-dip galvanized, resistant to weather influences and can be easily transported and installed. The company offers various types of markers, including the 'Borne Jollien' and the 'Borne Jollien PFP', which were specifically developed for marking points and boundaries.