Certification instructions. You must sign the certification. You may cross out item 2 of the certification. 4.

PROFILE/SHEET EXTRUDER R A I L S A N D K I C K P L A T E S • Convert existing PVC profile and sheet rails and kick plates to polyethylene resin to meet Class A fire safety (ASTM E84) • Provide a system that meets healthy building certifications and approvals • Utilize a more sustainable flame retardant technology, removing brominated or halogenated flame retardants from the environment • Achieve non-compromising performance in aesthetics, impact, dimensional stability, CLTE, and E84 testing • Provided non-halogenated flame retardant platform, backed by extensive application and industry expertise, to meet global flammability standards • Has largest UL94 recognized Prospector membership with HB, V-0, V-1, V-2 and 5VA/5VB ratings, and broad glow wire performance products • Included in-house UL certified labs and manufacturing locations to perform UL94 material sampling and testing • Supported application development to meet fire safety standards, address current or emerging healthy building codes, smart home requirements, and LEED credits • Offered custom formulations in small lot quantities Cesa MAX Flame Retardant Additives KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION CERTIFICATIONS + QUALITY LEARN MORECopyright © 2022, Avient Corporation.

No. 0562.01) 11/30/2023 Page 1 of 1 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 AVIENT CORPORATION 733 East Water Street North Baltimore, OH 45872 Claire Holman Phone: (419) 257-1327 MECHANICAL Valid To: October 31, 2025 Certificate Number: 0562.01 In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to this laboratory to perform the following automotive plastics tests: Test Method: Test Name: ASTM D412 Tensile ASTM D523 Specular Gloss ASTM D618 (A) Conditioning of Plastics ASTM D624 (Die C) Tear Strength ASTM D638 Tensile Properties ASTM D792 (A) Density and Specific Gravity by Displacement ASTM D1004 Initial Tear Resistance ASTM D1203 (A) Volatile Loss ASTM D1895 (A) Apparent Density, Bulk Factor, Pourability ASTM D1921 Particle Size (Sieve Analysis) ASTM D2240 Durometer Hardness (Shore A and D) ASTM E1331 Color by Spectrophotometry Using Hemispherical Geometry FMVSS 571.302 Flammability FORD BN-102-01 (A) Low Temperature Flexibility FORD BO-131-03 Interior Odor ISO 3795 Determination of Burning Behavior of Interior Materials SAE J323 (A) Cold Cracking (Mandrel Bend) SAE J1351 Hot Odor for Insulation Materials SAE J1545 Instrumental Color Difference Measurement DOC-058151 Angle of Repose 1 Laboratory Developed Method For the tests to which this accreditation applies, please refer to the laboratory’s Mechanical Scope of Accreditation. Trace McInturff, Vice President, Accreditation Services For the Accreditation Council Certificate Number 0562.01 Valid to October 31, 2025 0562-01 0562-01c

ISO/TS 16949 certifications (7) are site-specific. What certifications exist, or what certifications is the supplier in the process of achieving Plants are ISO 9001or ISO/TS 16949. PolyOne generally supplies a Certificate of Analysis. 12.

质量管理体系认证认证 Certificate No.：04621Q16559R0S We hereby certify that the organization: Fiber-Line Asia Pacific (Changzhou) Co., Ltd. Unified social credit code: 91320412MA1NMF5W4P is in conformity with Quality Management System Standard: GB/T19001-2016 / ISO9001:2015 The certificate is valid to the following product(s)/service: Textile (Yarn), Glass Products (Yarn) Coating Processing Registration Address/ Physical Address: R&D Workshop 5, No. 8, Lanxiang Road, West Taihu Science and Technology Industrial Park, Changzhou City, Jiangsu Province, P.

MAIA+ N° rapport :223-2023-000066-FR 10898066 0.5 jour Date Début / Fin :04/11/2022 /04/11/2022 PolyOne France - site de Saint Ouen l'Aumône 1 /11 ATTESTATION DE RECONNAISSANCE Attribué à PolyOne France - site de Saint Ouen l'Aumône 14 avenue de l'Eguillette / ZA du Vert Galant 95310 - SAINT OUEN L'AUMONE - FRANCE Bureau Veritas Certification certifie que les prestations de l’entreprise susmentionnée ont été évaluées et jugées conformes aux caractéristiques énoncées dans le décret en vigueur à la date d’édition du présent certificat : Décret n°2021-461 du 16 avril 2021 relatif à la prévention des pertes de granulés de plastiques industriels dans l’environnement Sous réserve du respect des caractéristiques vérifiées, cette attestation est valable jusqu’au : 16/02/2026 Date originale : 17/02/2023 Attestation n°: 223-2023-000066-FR Date : 17/02/2023 Affaire n°: 10898066 Laurent CROGUENNEC - Président Adresse de l’organisme certificateur : Bureau Veritas Certification France Le Triangle de l'Arche - 9 Cours du Triangle - 92937 Paris La Défense Des informations supplémentaires concernant le périmètre de cette attestation ainsi que l'applicabilité des exigences du décret peuvent être obtenues en consultant l'organisme.

5‘冲」之七乃竿月 rf』J枯：“号淤，石 「3 ;:;This certificate is valid from 20 February 2021 until 19 February 2024 S SGSGS and remains valid subject to satisfactor y surveillance audits Re certification audit due before 6 January 2024 Issue 6.

Manufacturers have the ability to design and validate to meet UL criteria: • UL 94 V-0 • UL 94 HB • UL 94 V-1 • UL 94 5VA • UL 94 V-2 • UL 94 5VB • ASTM E-84 (Class A, B, C) Avient’s Corporate Technology Analytical testing lab participates in UL’s Total Certification Program and their Client Test Data Program, helping manufacturers reduce time to market by integrating the product certification process in a comprehensive program.