RMX Freight Systems, Inc. RMX Freight Systems, Inc. Search | Advanced Search | New Members | Coupons and Discounts | All Categories   Industrial & Manufacturing >> Trucking - General Freight RMX Freight Systems, Inc. P. O. Box 185White Cottage, OH 43791 | map | directions (740) 849-2374 | fax: (740) 849-3133 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.