The Chlorine Institute 
https://chlorineinstitute.org/

The Chemistry Council of New Jersey 
https://www.chemistrycouncilnj.org/

The American Chemistry Council 
https://www.americanchemistry.com/s_acc/index.asp

The National Association of Chemical Distributors 
https://www.nacd.com/

CHLOREP 
https://www.chlorineinstitute.org/Emergency/content.cfm?ItemNumber=466