No. 0562.01) Revised 05/31/2022 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, 2023 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 SAE J1756 Fogging Characteristics of Interior Automotive Materials (Photometric Only) 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.

Cesa Stat Antistatic Additives - Standard Portfolio POLYMER FAMILY MATERIAL PRODUCT NAME DOSAGE Polyolefin PEATEC Cesa Stat PEATEC 1.0–4.0% Polypropylene PPA0820051 Cesa Stat PPA0820051 1.0–4.0% Polyamide ABAN698400 Cesa Stat 99027 5.0–15.0% Polyester NBAN698440 Cesa Stat 3526 2.5–10.0% Polycarbonate NCA0820011 Cesa Stat NCA0820011 5.0–8.0% Styrenic SLAN698401 Cesa Stat 3301 3.0–7.5% TPU RUA0820024 Cesa Stat RUA0820024 2.0–4.0% Polyester FPA1660283 Hiformer™ liquid additives for polyolefins 0.10–0.50% Cesa Stat Antistatic Additives can be used in combination with other Cesa masterbatches, and formulations can be customized for most applications.

APPLICATION BULLETIN PRODUCT NAME SUITABLE FOR APPLICATION LDR Cesa™ Stat OCA0025695 PP Permanent reduction of dust attraction in interior From 5% Cesa™ Stat OCA0025609 PC/ABS, PA6, PC/ASA Permanent reduction of dust attraction in interior From 8% Cesa™ Stat OCA0025603 LDPE, TPE Permanent reduction of dust attraction in interior From 7% The graph shows the measurement of the charge decay time at 23°C/50% r.H. on 80x80x2mm IM plaques.

COLORANT CHROMATICS HIGH-TEMPERATURE POLYMER FORMULATIONS PRODUCT SELECTION GUIDE COLORANT CHROMATICS HIGH TEMPERATURE COMPOUNDS PROPERTY ISO Test Method Units PES PPSU PEI LCP PEEK PSU PHYSICAL Density 1183 — 1.37 1.29 1.27 1.40 1.30 1.24 Mold Shrinkage Flow/X-flow 294–4 % 0.8/0.85 0.7/XX 0.6/0.7 0/0.7 1.0/1.3 0.7 MECHANICAL Tensile Strength 527 Mpa 85 70 85 200 100 70 Tensile Elongation Yield 527 % 7 7.5 6 — — 6 Tensile Elongation Break 527 % >25 >60 60 3 30 >50 Izod Notched 180 kJ/m2 7 55 5 95 7 5.5 THERMAL HDT 1.8 MPa 75 °C 205 200 190 190 150 175 FLAMMABILITY Flame Rating UL-94 — V-0 V-0 V-0 V-0 V-0 HB ADDITIONAL Steam Sterilizable — Cycles 100 2000 2000 1500 1000 100 CUSTOM OPTIONS Color — — Yes Yes Yes Yes Yes Yes Reinforced — — Yes Yes Yes Yes Yes Yes Conductive — — Yes Yes Yes Yes Yes Yes Lubricated — — Yes Yes Yes No Yes Yes Radiopaque — — Yes Yes Yes No Yes Yes Trade Names — — Veradel Ultrason E Radel Ultrason P Ultem Vectra Zenite Xydar KetaSpire Victrex Vestakeep Udel Ultrason S Avient high temperature precolored and specialty compounds are your solutions for high performance products.

as destocking comes to an end and underlying demand starts to improve In the first quarter, we expect demand to continue to improve in our two largest end markets, packaging and consumer, as destocking comes to an end and our sustainable solutions portfolio expands. We anticipate demand strengthening as we progress through the year as destocking fully comes to an end, interest rates begin to abate and consumer sentiment improves."

TPEs, however, have an advantage when it comes to recycling. With that widespread availability also comes a wider selection of mold metals and production techniques. http://www.ptonline.com/articles/getting-into-lsr--part-iv-how-lsr-tooling-is-different TPEs Convey Material To Dryer Machine Dry Melt Inject Into Mold Eject Finished Part Cold Mold Solidifies Material 20+ Seconds LSR A/B Kit Set In Pump Unit Pump To Machine Mix Inject Into Mold Eject Finished Part Hot Mold Cures Material Post Cure (Optional) Minutes PROCESS COMPARISON Cycle Time PRODUCTION CONSIDERATIONS Thermoplastic elastomers have rapid cooling times and do not require secondary operations or curing agents, which leads to quick turnaround and fabrication. Fluorosilicones exhibit little swell without the need for fillers, but comes at a price premium.

News Release - AVNT-2023.12.31-News Release 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Fourth Quarter and Full Year 2023 Results • Fourth quarter and full year GAAP EPS of $0.30 and $0.83 compared to $(0.19) and $0.90 from continuing operations in the prior year • Fourth quarter and full year adjusted EPS of $0.52 and $2.36 exceeds guidance of $0.47 and $2.30 as a result of favorable sales as well as lower net interest expense • Fourth quarter adjusted EPS increased 24% over the prior year pro forma adjusted EPS primarily driven by improved margins from positive portfolio mix, raw material deflation and cost reduction actions • 2024 full year adjusted EPS expected to range from $2.40 to $2.65 as destocking comes to an end and underlying demand starts to improve CLEVELAND – February 14, 2024 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable materials solutions, today announced its fourth quarter and full year results for 2023. Adjusted free cash flow for 2023 was $186 million, slightly ahead of expectations. 2 2024 Outlook “In the first quarter, we expect demand to continue to improve in our two largest end markets, packaging and consumer, as destocking comes to an end and our sustainable solutions portfolio expands. We anticipate demand strengthening as we progress through the year as destocking fully comes to an end, interest rates begin to abate and consumer sentiment improves.”

FIBERS PROCESSES PRODUCTS MOVING HIGH PERFORMANCE FIBERS FORWARD NOMEX® META-ARAMID WHY NOMEX® META-ARAMID Molecular Structure Chemical Name Poly (meta-phenyleneisophthalamide).

Molecular Structure Chemical Name P-phenylene-2,6-benzobisoxazole (PBO).

FIBER OPTICAL CABLES MOVING HIGH PERFORMANCE FIBERS FORWARD Molecular Structure Chemical Name Cured Phenol-Aldehyde from melt-spun Novalac resin.