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Proudly serving our customers since 1997

DNX Engineers, Ltd. is a California corporation which manufactures air emissions control systems for industrial combustion applications. As an outgrowth of this, we also supply ammonia storage and process systems. We have been in business as DNX Engineers since January 1997 and the founders, Bauke Van Kalsbeek and Ron Cheek have been working as a team in this field since 1990. Since it's inception in 1997, DNX has delivered over 40 systems and worked in a consulting role on many others.

Our objective is to provide high quality, innovative and cost effective solutions for our customers through cooperative and flexible relationships. DNX can provide the results one might expect from a large company with the accessibility and responsiveness of a small company.


DNX Engineers, Ltd. provides engineering , design services and supplies engineered systems to the power and process industry. Our specialty being the control of Nitrogen Oxide (NOx) emissions.