Cummins Filtration (U.S.)
Nissan Chemical Industries (Japan)
Yara International (Norway)
Shaw Development LLC (U.S.)
CF Industries Holdings (U.S.)
The McPherson Companies (U.S.)
BASF SE (Germany)
Blue Sky Diesel Exhaust Fluid (DEF) (U.S.)
Brenntag AG (Germany)
Carson (Portland) and Mitsui Chemicals Inc. (Japan).