If you search for AIN plastics you will find a site link called
Thyssenkrupp Engineered Plastics.  I guess that AIN was a division of
Thyssenkrupp or the name was changed.  The contact telephone number
is 1-866-837-0679.  They have a web site:
http://www.thyssenkrupp-materials-services.com/en/contact/thyssenkrupp-engineered-plastics 

Bill Black