CGI is a typographic emblem stamped on Caprican government-issued supplies, including cooking oil and canned foodstuffs.
Karl "Helo" Agathon and the Caprica-copy of Sharon "Boomer" Valerii follow a disaster beacon to a fall-out shelter in the basement of a diner, which they find stocked with various supplies (TRS: "Act of Contrition").
Notes
It is feasible that CGI is analogous to the United States of America's Defense Logistics Agency (DLA), the government organization tasked with its military's subsistence supply chain.