EcoCing Corporation
- A business founded upon improving public health, quality of life and energy substainability, located in Calgary, Alberta, Canada. Has information on "Dieselization."
- http://www.ecocingcorp.com

Tadger Group International
- Site has information on the Tadger and how it helps to reduce emissions, increase horsepower and improve mileage of gasoline and diesel engines.
- http://www.tadgergroup.com

Rotec Design Ltd.
- Design and development company specializing in reducing diesel emissions from in service buses and trucks.
- http://www.rotecdesign.com

Emissions Technology
- Manufacturers of emission control products for diesel engines.
- http://emissionstech.co.uk

Red Mountain Engineering
- Manufacturer of Smoke Check 1667 a diesel emissions testing solution.
- http://www.redmtnengr.com

V&F Gas Analysis Systems, Inc.
- Providing mass spectrometers to the automotive, process and quality control industries throughout North America, for gas emissions and research & development.
- http://www.vandfna.com/