From the IGC:
...Rather than being a leading sector, manufacturing in Africa has been lagging. This has contributed to stagnation in growth potential and job creation in high value-added sectors, hampering economic growth (Ansu et al., 2016).More here
Increasing FDI can enable Africa to raise productivity and expand high value-added activities. Recent studies show that FDI can generate productivity spillovers, which in turn could create decent jobs and a sustained impact on growth and development in Africa. Making it easier and more attractive for foreign firms to invest in African manufacturing and high-value added services should therefore be a priority for governments and international donors.