The EPZ zones (Export Processing Zones) are indeed the best location to set up factories or warehouses. You can offer jobs to staff typically from India or so, or why not, from Kenya, to work there. Things tend to be entirely tax-free, and you do not need to worry about local politics. I would not put down a factory full of expensive equipment in Kenya. In terms of governance and risk evaluation, it really does not sound like a good idea to do that. The staff would have to come over to the EPZ to work from there.