Certificate of RegistrationThis certifies that the Quality Management System of

H. B. Carbide Company4210 Doyle Drive

Lewiston, Michigan, 49756, United States

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

ISO 9001:2015Scope of Registration:

The manufacture of special tungsten carbide preforms and extruded tungsten carbide products.The validity of this certificate depends on the validity of the main certificate C0173270 Star SU, LLC

Jennifer Morecraft,Senior Managing Director

Certificate Number: C0173270-IS4-62738

Certificate Issue Date: 27-OCT-2021Registration Date: 31-OCT-2021

Expiration Date *: 01-NOV-2024