Qualix Group Worldwide Headquarters By Phone (800) 245-8649 (415) 572-0200 Call toll-free any weekday between 6:30am and 5:30pm Pacific Time. By Fax (415) 572-1300 Our Fax machine operates 24 hours a day, 7 days a week. By Mail Qualix Group, Inc. 1900 South Norfolk, #224 San Mateo, CA 94403 By E-Mail info@qualix.com In Person Qualix Group, Inc. 1900 South Norfolk, #224 San Mateo, CA 94403