Siegwerk is now active in Nigeria, Africa’s largest market, with Siegwerk West Africa. With a major customer already in place and great interest in Siegwerk’s know-how, the unit is projected to turn profitable quickly.      Siegwerk West Africa is a joint venture with local entrepreneur Alberto Naim’s Pouka Inks, with Siegwerk holding 80 percent of the new company. Based in Ibadan in southwestern Nigeria, the new blending center currently customizes inks for a main customer.      “This is a...