NRDC: Subtracting Sulfur: Reducing Diesel Sulfur Levels to Reduce Urban Pollution
Motor Fuels > Diesel Sulfur Rule's Impact on Diesel Fuel Marketers | NACS Online
European: 350 ppm -> 50 ppm (2005) -> 10 ppm (2009)
Taiwan: Diesel Classification 350 -> 50 (2005)
USA S500 -> S15 (2007) Diesel Fuels Question and Answers - New s15 ULSD Regulations
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