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: 2025年10月31日 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. Accredited Laboratory A2LA has accredited AVIENT CORPORATION North Baltimore, OH for technical competence in the field of Mechanical Testing This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories.

Carbon fiber production took off during the 1960’s but the high price of the material limited its initial usage. Today, there are several types and manufacturers of carbon fiber tows, which has broadened the materials usage to a vast number of applications and markets. We believe that our ongoing commitment to protect the environment, to remain at the forefront of fiber and coating technology, and to ‘treat others as we want to be treated’ will continue to drive the success of our customers, shareholders, and employees.

When such loss, damage or delay is the result of the carrier's willful misconduct, gross negligence, material or fundamental breach, or conversion, said limitation of liability shall not apply, and shipper shall be reimbursed for the actual value of the property, plus freight charges, if paid. CARRIER agrees to notify SHIPPER immediately upon discovery of any evident tampering or an occurrence that results in spilled, damaged or lost freight, regardless of whether or not the product is known to be hazardous, and to await instructions or advice from SHIPPER before further loading, transporting or delivering any goods potentially effected by spilled, leaked or released materials or other matter.

W AT E R S TO R AG E M A N U FAC T U R E R P O T A B L E W A T E R T A N K S • Diminish growth of microbials in water tanks to provide differentiating feature for landmark product launch • Prevent undesirable odor associated with bacteria and fungal growth on the product’s polymer surface • Meet FDA, NSF, and UL regulatory requirements • Formulated a multi-polymer solution that ensured microbial and fungal growth were diminished while preserving polymer performance • Utilized antimicrobials to mitigate the causal effect of undesirable tastes and odors • Enabled customer to meet requirements through Avient’s knowledge and expertise of regulatory protocols Cesa™ WithStand™ Antimicrobial Additives KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION PREVENTION + PROTECTION LEARN MORE Copyright © 2022, Avient Corporation.

L E A D I N G C O N S U M E R G O O D S C O M PA N Y B O D Y W A S H C A P S • Lend guidance in using color trending intelligence to customize 20+ colors for product line rebranding • Provide fast turnaround on new designs to improve speed to market • Navigate development efforts with external design firms and label manufacturers to ensure visual consistency and brand identity • Receive technical support before and during processing • Delivered over 20 approved custom colors utilizing market and trend expertise • Employed both virtual and onsite co-collaboration sessions for quick turnaround on crucial color decisions • Worked with all necessary parties, including design firms, manufacturers, and internal engineering team to protect brand integrity • Provided technical support and expertise to converter ColorWorks™ Design & Technology Centers – West Chicago KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION COLOR MATCHING + SPEED TO MARKET LEARN MORE Copyright © 2023, Avient Corporation. https://www.avient.com/avient-colorworks

Additionally, personal protective equipment may be required in certain areas of the facility Material management Raw materials used in Avient healthcare applications must fulfill a minimum set of requirements. At Avient, we create specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world.

Avient Resources Avient Resources Explore how floating solar power stations get weathering protection from anti-uv color concentrate

A V IE N T C O R P O R A T IO N A N N U A L R E P O R T 2 0 2 4 2024 ANNUAL REPORT Innovator of Materials Solutions AVIENT.COM Our purpose at Avient Corporation (NYSE: AVNT) is to be an innovator of materials solutions that help our customers succeed, while enabling a sustainable world. Further, as a result of Avient's strategic shift to an innovator of materials solutions, it has completed several acquisitions and divestitures which have resulted in a significant amount of intangible asset amortization. now Silicor Materials Inc.)

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