Dow Announces MDI Increase

December 4, 2017

MDI Price Action

Dear Valued Customer:

Effective January 1, 2018, or as contracts allow, The Dow Chemical Company (“Dow”)
will increase its price $0.09/pound for all market segments in the United States for the
following products:

• PAPITM
• ISONATETM
• ISOBINDTM

Your Dow sales representative will be contacting you in order to answer any questions
you might have and to review your sales plan volumes.

Dow appreciates your business, and we look forward to our continued relationship.