Key Companies Key Companies Search | Advanced Search | New Members | Coupons and Discounts | All Categories   Other >> Sign Design Key Companies 195 East Livingston AvenueColumbus, OH 43215 | map | directions (614) 228-3285 | fax: (614) 228-0687 Visit Site 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.