Challenge Inc., Indianapolis, has signed agreement with Blackfast Chemicals Ltd., New Malden, Surrey, England, which will allow Challenge the exclusive right to manufacture and sell the Blackfast line of phosphate replacement products in the U.S. Additionally, Challenge will be the U.S. distributor for the Blackfast line of room temperature blacking products.

For more information, call (800) 548-7148 or visit www.challenge-inc.com.