Every activity present in the ecoinvent has a geographic location. This geographic locations are reported using internationally accepted shortcuts. For example Switzerland has the shortcut CH, Czechia CZ and China CN. The list of geographies available in ecoinvent can be found here.
Certain geographical location shortcuts are not as well know or commonly used. For example, GLO means global and represents activities which are considered to be an average valid for all countries in the world. RER shortcut represents Europe. RoW represents the Rest-of-the-World. In ecoinvent v3.2 (2015) and higher the RoW is generated as an exact copy of the GLO dataset with uncertainty adjusted. The newly generated RoW is then linked with activities of an adequate geographies creating RoW specific supply chain.