Air Products
http://www.airproducts.com


Citgo Asphalt
http://www.citgo.com/Products/Asphalt.jsp


Sunoco
http://www.sunocoinc.com/index.htm


ExxonMobil Lube
http://www.exxonmobil.com/corporate/


ExxonMobil Research
http://www.exxonmobil.com/corporate/



Ferro
http://www.ferro.com/


Johnson Matthey
http://www.matthey.com

Nu Star Energy, LP

Mannington Mills
http://www.mannington.com/

Premcor
http://www.premcor.com

Delaware City
Premcor is now Valero, Delaware City

Solvay-Solexis
http://www.solvay-solexis.com/


Valero Refining
http://www.valero.com/

ConocoPhillips
http://www.conocophillips.com/

Baxter
http://www.baxter.com/

Lubrizol
http://www.lubrizol.com