Monday - Sunday 9:00am - 5:00pm

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Certified DEF LLC is a national producer and distributor of diesel exhaust fluid (DEF). We operate an extensive network of DEF production and packaging facilities located across North America. Our network was specifically put into place to service customers more efficiently and effectively throughout the country. By providing quality product within close proximity to our customers, we cut costs on freight and improve economics. With our own dedicated fleet of DEF delivery trucks that are equipped to haul a combination of bulk and palletized products we have the ability to service each customers’ specific needs quickly and competitively. Our trucks have the capacity to carry upwards of 7,500 gallons where permitted, allowing us to optimize freight costs.

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