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