Map for A4 Technologies Inc. Map for A4 Technologies Inc. Search | Advanced Search | New Members | Coupons and Discounts | All Categories Business & Professional Services >> Consultants A4 Technologies Inc. P.O. Box 211071Columbus, OH 43221 | directions (614) 679-9364 Need to update your categories or expand your listing? Or want to learn how your business can become a part of the Chamber? Contact us at membership@columbus.org for assistance.