The services rendered by Nigerian Airways to foreign companies are part of Nigeria's

The services rendered by Nigerian Airways to foreign companies are part of Nigeria's "invisible exports". Invisible exports are services that are provided by residents of a country to non-residents of that country. In the case of Nigerian Airways, they are providing services, such as air transportation, to foreign companies that are located outside of Nigeria. These services generate revenue for Nigeria, but they are not tangible goods that can be seen or touched. Therefore, they are classified as invisible exports. Invisible exports are an important source of revenue for many countries, especially those that have a strong service sector. Examples of invisible exports include transportation services, financial services, and consulting services. By exporting these services, countries can generate revenue and support economic growth.