Marcopolis.net Video Interview with Lionel Barre, Managing Director of GREL (Ghana Rubber Estates Limited), also available here br br GREL is a company specialized in rubber plantations and natural rubber processing in Ghana. Its Managing Director, Lionel Barre, presents the company and talks about the competition in West Africa but also on a global level. br br To read the full transcript of the MarcoPolis interview with Lionel Barre, Managing Director of GREL (Ghana Rubber Estates Limited), visit Marcopolis.