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National Heat Exchange Cleaning Corp. 
156 Nulf Dr. 
P.O. Box 71 
Columbiana OH 44408-9720 
USA 
 
Phone: 330-482-0893 
Fax: 330-482-0895
Products in our catalog: Explosive Hardening
 
Email:
Web:  http://www.nationalheatexchange.com
 
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