Certificate of RegistrationThis certifies that the Quality Management System of

CTA Acoustics, S. de R.L. de C.V.Jose Barba Alonso #115

Manzana 5 Lote 8, Cd. IndustrialAguascalientes, Aguascalientes, 20290, México

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

IATF 16949:2016Scope of Registration:

Manufacturing of Thermal and Acoustical Products

Exclusions: Design of Product

IATF Certificate Number:0364971

Tom Chestnut,Sr Vice President - ISR, NSF-ISR, Ltd.

Page 1 of 2

Certificate Number: C0455361-TS1-C0109062Certificate Issue Date: 05-FEB-2020Registration Date: 04-FEB-2020Expiration Date *: 03-FEB-2023

This Annex is only Valid in connection with the above-mentioned certificate issued by NSF-ISR

Page 2 of 2

ANNEX PAGE FOR CERTIFICATE REGISTRATION NUMBERC0455361-TS1-C0109062

IATF CERTIFICATION NUMBER: 0364971CERTIFICATE ISSUE DATE: 05-FEB-2020

CERTIFICATE EXPIRATION DATE: 03-FEB-2023CTA Acoustics, S. de R.L. de C.V.

Jose Barba Alonso #115Manzana 5 Lote 8, Cd. Industrial

Aguascalientes, Aguascalientes, 20290, México

Remote Location: CTA Acoustics - Corbin - C0109062

100 CTA BoulevardCorbin, Kentucky, 40701, United States

Scope:Product Design, Sales, Marketing, Engineering.

Remote Location: CTA Acoustics - C0123125

25211 Dequindre RoadMadison Heights, Michigan, 48071, United States

Scope:Sales, Process Design