Wanhua TDI Hike

February 9, 2018

Dear Valued Customer,

Wanhua Chemical will increase the prices of its WANNATE® TDI products by
$0.10/lb in the North American and Caribbean regions effect March 1, 2018, or as
existing contracts allow. For clarity, this is in addition to all previous
announcements.

Your Wanhua Sales Director will contact you shortly to discuss the details of this
price change.