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Any translations of this document shall be used for reference only.) 1/2 Certificate of Approval AWARDED TO PolyOne France Tossiat Route de la vavrette, 01250, Tossiat - France IATF USI: LWZS4P Bureau Veritas Certification certify that the Quality Management System of the above organisation has been audited and found to be in accordance with the requirements of IATF 16949 - FIRST EDITION and the applicable customer specific requirements SCOPE Design and manufacturing PERMITTED EXCLUSION(S) None PRODUCT(S) DELIVERED colour with additive concentrates for thermoplastic resins and speciality compounds obtained by mixing and extrusion https://e-cer.bureauveritas.com/68LJQE0ZV0CO6I7YW0YSXOUMV9WWROQPHPI2AOHRRLFFVRAVTFVZGXKWIE3TOWLTTKEWCPQB9UNAPXHH6T0HXOMUEDVYPRPJLEXBBTKQYPBRICYOKY143TECQ5UMHGA3JX Date Of Certification: 11 December 2024 Date Of Expiration: 10 December 2027 IATF Certificate N°: 0558656 Bureau Veritas Certification Certificate No: FR094003 - IATF Revision: 1 For Bureau Veritas Certification Holding, Tour ALTO, 4 place des saisons, 92400 COURBEVOIE – France (The official document is in English. Any translations of this document shall be used for reference only.) 2/2 Appendix to the Certificate of Approval AWARDED TO PolyOne France Tossiat Route de la vavrette, 01250, Tossiat - France IATF USI: LWZS4P REMOTE SUPPORT FUNCTION(S) NAME ADDRESS SCOPE AVIENT LUXEMBOURG 19, Route de bastogne, 9638, Pommerloch - Luxembourg IATF USI: GAZS9A Purchasing, Logistics, Supplier Management PolyOne Europe Logistics 7 Rue bleriot, 4460, Grace-Hollogne - Belgium IATF USI: P4WA4Y Warehousing Polyone Poland Ul. wschdnia 6, 99-300, Kutno - Poland IATF USI: C4W5ZL Logistics https://e-cer.bureauveritas.com/68LJQE0ZV0CO6I7YW0YSXOUMV9WWROQPHPI2AOHRRLFFVRAVTFVZGXKWIE3TOWLTTKEWCPQB9UNAPXHH6T0HXOMUEDVYPRPJLEXBBTKQYPBRICYOKY143TECQ5UMHGA3JX 2024-12-13T10:07:11+0100 Authenticity and Integrity

Park, China (Shanghai) Pilot Free Trade Zone, Shanghai, China 201203 and the sites as mentioned in the appendix accompanying this certificate has been found to conform to the Quality Management System standard: GB/T 19001-2016 / ISO 9001:2015 This certificate is valid for the following scope: Design and Manufacture of Colour and Additive Concentrates http://www.dnv.com/assurance Certificate no.: 7071-1998-AQ-RGC-RvA Place and date: Shanghai, 20 March 2024 Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. Park, China (Shanghai) Pilot Free Trade Zone, Shanghai, China 201203 Design and Manufacture of Colour and Additive Concentrates http://www.dnv.com/assurance

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Figure 12: Duration of use BMC Musculoskeletal Disorders 2021 22:186. https://doi.org/10.1186/s12891-021-04054-6 Figure 11: Duration of use Journal of Rehabilitation Medicine, 47 2 (2015): 154-60. https://doi.org/10.2340/16501977-1897 https://doi.org/10.1186/s12891-021-04054-6 https://doi.org/10.2340/16501977-1897 https://www.semanticscholar.org/paper/Hand-grip-fatigability-in-persons-with-multiple-to-Severijns-Lamers/834a2a4e4665c6e9f3d7513507807314d0214828 Ergonomic Grip Design Guide 11 Pre-production validation of the conceptual design is paramount in reducing the overall risk of the program. PART MODEL (GEOMETRY AND MESH) MATERIAL MODEL Steel hammer shaft Polymer hammer shaft Wood hammer shaft Figure 19: Material data Inputs * http://www.scielo.org.mx/pdf/remcf/v9n48/2007-1132-remcf-9-48-181-en.pdf ** https://www.westsystem.com/products/compare-epoxy-physical-properties/ http://www.scielo.org.mx/pdf/remcf/v9n48/2007-1132-remcf-9-48-181-en.pdf https://www.westsystem.com/products/compare-epoxy-physical-properties/ Ergonomic Grip Design Guide 19 After setting up the part and material models, the team determined applicable physics for the study. Figure 27: Mold flow fill analysis https://www.avient.com/products/thermoplastic-elastomers/tpe-knowledge-center HOW AVIENT CAN HELP We can help you improve the ergonomic properties of your handheld device to achieve greater usability, comfort, safety and satisfaction.

To verify that this certificate is current, please refer to the SAI Global On-Line Certification Register: https://www.saiglobal.com/en-us/assurance/auditing_and_certification/certification_registry/ This is to certify that operates a which complies with the requirements of for the following scope of certification CERTIFICATE OF REGISTRATION Frank Camasta Global Head of Technical Services SAI Global Assurance http://www.qmi-saiglobal.com/qmi_companies http://www.qmi-saiglobal.com/qmi_companies

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CHECK OUT THIS BEGINNERS GUIDE TO TPES https://www.avient.com/idea/video-advances-overmolding https://www.avient.com/products/thermoplastic-elastomers/tpe-knowledge-center/beginners-guide Pr od uc t P er fo rm an ce Market Pricing ($/lb.) lo w hi gh Engineering Elastomers Standard Elastomers fPVC EVA SBSPOE TPO OBC SEBS TPV TPU COPE COPA $ $$ $$$ $$$$ LSR** PRODUCT PERFORMANCE VS. PCF COMPARISON https://www.carbon-minds.com/lca-database-for-chemicals-and-plastics/ https://www.silicones.eu/wp-content/uploads/2019/05/SIL_exec-summary_en.pdf https://www.avient.com/idea/making-plastic-parts-more-sustainable 1http://www.ptonline.com/articles/getting-into-lsr--part-iv-how-lsr-tooling-is-different Tooling Costs PRODUCTION CONSIDERATIONS In nearly every case, molds needed for LSR fabrication require more precision and tooling expertise than those used to manufacture TPE parts. WE’VE GOT YOU COVERED. http://www.art.canaco.org https://www.avient.com/sites/default/files/2020-11/gls-acqua-plose-case-study.pdf 1http://store.elsevier.com/Handbook-of-Polymer-Applications-in-Medicine- and-Medical-Devices/isbn-9780323221696/ Tear Resistance PERFORMANCE COMPARISON In Handbook of Polymer Applications in Medicine and Medical Devices,1 Laurence W.