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We are a leading manufacturer of Diesel Exhaust Fluid certified by the American Petroleum Institute. While our home base is in Portland, Oregon, you'll find NEXGEN DEF throughout the United States and Canada.
![NEXGEN DEF is certified by the American Petroleum Institute to meet exacting standards of vehicle manufacturers.](http://www.nexgendef.com/wp-content/uploads/2020/02/API_DEF_CMYK-300x300-150x150.jpg)
We are a leading manufacturer of Diesel Exhaust Fluid certified by the American Petroleum Institute. While our home base is in Portland, Oregon, you'll find NEXGEN DEF throughout the United States and Canada.