More than half of the index companies are active in Nigeria and Senegal. In contrast, only a single company is active in the Central African Republic, Equatorial Guinea and Guinea-Bissau. The majority of countries have a maximum of four index companies present. Capacity building activities are also concentrated in Nigeria (eight companies), although company involvement is at a much lower level than sales. Extension services are lacking in ten countries. However, regional companies in particular organize robust capacity building activities in the country where they are headquartered. Technisem stands out for offering capacity building in 13 of the 17 countries where it is present.