Switzerland student visa requirements for nigerian citizens Organization invitation. A business invitation letter from the sponsoring business from the place nation. The letter ought to be printed on business letterhead stationery, addressed to "The Consulate of Nigeria, Visa Area", and signed by a senior supervisor. The enterprise letter ought to https://www.quora.com/profile/Africred/7-Ways-Africred-is-Shaping-the-Education-Sector-in-Sub-Saharan-Africa-https-africred-org-https-africred-org-visa-a