Hatco Corporation, New Jersey, USA
Empaques Modernos, Guadalajara, Mexico
**US Oil & Refining, Washington, USA
*Temple University, Pennsylvania, USA
**Georgetown University, Washington DC, USA
Burlington Industries, Virginia, USA
**Arizona Chemical , Ohio, USA
Mohawk Carpet, Tennessee, USA
Cambrex Corporation, Iowa, USA
Sutherland Boiler Company, Nova Scotia, Canada
PAPELSA, Colombia
**Dunn Paper , Michigan, USA
Avon Products, Ohio, USA
3M, Kentucky, USA
Leche Rica, Santo Domingo, Dominican Republic
**Georgetown University , Washington DC, USA
**Coors Brewing Co., Colorado, USA
*Oklahoma State University, Oklahoma, USA
Alfred State University, New York, USA
Lloreda S.A. , Yumbo, Colombia
**Shell Oil Products, California, USA
Los Angeles County, California, USA
St. Vincent Medical Center, Ohio, USA
Compañía Numar, San Jose, Costa Rica
Liga Agricola de la Cana, Costa Rica
**Alyeska Pipeline Valdez Termina, Alaska, USA
Quest International, Quintana Roo, Mexico
**Valero Refinery, Delaware, USA
Industrias Panama Boston , Panama City, Panama
**Rohm & Haas, Pennsylvania, USA
*Carlisle Finishing, North Carolina, USA
*Sutherland Boiler, Nova Scotia, Canada
Dixie Chemical Company, Texas, USA
Akron Thermal, Ohio, USA
Descon Engineering Works, LaHore, Pakistan
**IFF Chemical, New Jersey, USA
DuPont Children's Hospital, Delaware, USA
Mt. Carmel West Hospital , Ohio, USA
**Weyerhauser, Pennsylsvania, USA
RECOPE, San Jose, Costa Rica
OTS Infotech , New Delhi, India
**Finchaa Sugar Factory , Ethiopia
Arkema Inc., Pennsylvania, USA
**Atlas Copco , New York, USA
Elements Pigments, Pennsylvania, USA