WORLDWIDE HEADQUARTERS
Houghton International Inc.
Main:
800-666-4684 \ 610-666-4000
Customer Service:
888-459-9844 \ 610-666-0174
Shipping Address:
945 Madison Avenue
Norristown, PA 19403
Mailing Adress:
P.O. Box 930
Valley Forge, PA 19482-0930
contact us