CAD Railway Industries - ESDC
Testing, research and development of medium speed diesel engines—Fuel and lubricant analysis
California Environmental Engineering (CEE)
Engine & vehicle emissions testing
Cambustion Ltd.
Fast emissions analysers—Automotive emissions consultancy, development and testing
ESW America Inc.
Engine & vehicle emissions testing—Emission certification & verification consulting services
Olson EcoLogic Engine Testing Laboratories
Engine & vehicle emissions testing
Sensors, Inc.
Portable emissions measurement systems (PEMS)—SEMTECH ECOSTAR emissions analyzers—Emissions testing services
ServoTech Engineering
Control systems for SCR catalysts and particulate filters—Urea dosing systems—Emission testing and R&D
Southwest Research Institute
Engine design—Diesel engine development—Fuels, lubricants, and emissions research and testing