See on this link Proudly Made in Africa featured in the Guardian. It is an article about ethical coffee and the systems of labelling for coffee. The article was written by Tim Hunt of Ethical Consumer magazine.
This is whay they had to say about PMIA
Proudly Made in Africa
The “value added” model addresses some models that don’t focus sufficiently on producer countries taking responsibility for processing. Finished products command much higher prices than raw agricultural produce, and being able to get that added value may be one of the most critical factors in enabling producers to escape from poverty.
Proudly Made in Africa is a new label focused on this issue, and certifies products as produced entirely in the countries where the original crops were grown. It is not yet widely available in the UK, but has certified coffee brands like Solino and Out of Africa.