About Us

Pro-Mark Utility Supply is an industry 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. ProMark is committed to providing exceptional customer support.  Whether you have questions about our products, need assistance with choosing the right markers, or require guidance on complying with regulations, our knowledgeable team is ready to assist you every step of the way.  ProMark is well-versed in these regulations and can provide you with products that meet the necessary compliance standards.  

 

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