About Us

Pro-Mark Utility Supply, Inc. is a leading manufacturer of pipeline markers, utility signs and cathodic protection test stations. Corporate offices are located in Whittier, California with manufacturing facilities in Los Angeles, California and Dallas, Texas  Our customer service and sales representatives will walk you through the ordering process from beginning to end. With over 25 years of experience in the industry we are ready to assist you with any questions and your product needs.  We thank you for your interest in our company and products.


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