Supply Of “Snack” Food Products For Blood Donors For The Benefit Of Regional Representations Under The Moroccan Agency For Blood And Its Derivatives In The 12 Regions Of The Kingdom: Tangier-Tétouan-Al Hoceïma, L’Oriental, Fès-Meknès, Rabat-Salé-Kénitra, Béni Mellal-Khénifra, Casablanca-Settat, Marrakech-Safi, Drâa-Tafilalet, Souss-Massa, Guelmim-Oued Noun, Laâyoune-Sakia El Hamra And Dakhla-Oued Ed-Dahab