Hours Of Operations Efi Incorporated Illinois Efi Incorporated Hours of Operation and Locations in Illinois 4.9 - 15 votes 1 Locations in Illinois www.flintgrp.com Efi Incorporated Hours Category: Electronics Efi Incorporated - Chicago, IL 60601 150 N Michigan Ave, #3680(312) 419-7439 View Store Details Recommend For You Dave's Computer Services Sierra Wireless Pc Laptop Repair Shop Game Time Repairs Csr Design Computer & Network Specialists Micro Computer Center Incorporated Home Pc Repair Meyer Company Abs Associates