Certificate of RegistrationThis certifies that the Quality Management System of

Watertown Cement Division363 Eastern Blvd.

Watertown, New York, 13601, United States

has been assessed by NSF-ISR and found to be in conformance to the following standard(s):

ISO 9001:2008

Scope of Registration:Manufacturing of Specialty Mortars and Membranes for theconstruction of tile tanks, and linings, for the pulp and paper,

petrochemical, mining, and power industries.

Carl Blazik,Director, Technical Operations & Business Units,NSF-ISR, Ltd.

Certificate Number: 26932-IS5Certificate Issue Date: 01-NOV-2016Registration Date: 28-OCT-2016Expiration Date *: 14-SEP-2018