Microsoft Word - Avient_RY 2022 CDP Verification Opinion Declaration_07-24-23 WATER RESOURCES • ENVIRONMENTAL SERVICES • HEALTH & SAFETY • CLIMATE CHANGE Apex Companies, LLC • (800) 733-2739 • www.apexcos.com VERIFICATION OPINION DECLARATION GREENHOUSE GAS EMISSIONS To: The Stakeholders of Avient Corporation Apex Companies, LLC (Apex) was engaged to conduct an independent verification of the greenhouse gas (GHG) emissions reported by Avient Corporation (Avient) for the period stated below.

Avient Presentation at Baird Sustainability Conference - 2/23/2021 PolyOne IR Presentation - Seaport Global Transports & Industrials Conference - 3/23/2018

Avient Presentation at Baird Sustainability Conference - 2/23/2021 PolyOne IR Presentation - Seaport Global Transports & Industrials Conference - 3/23/2018

Avient Presentation at Baird Sustainability Conference - 2/23/2021 PolyOne IR Presentation - Seaport Global Transports & Industrials Conference - 3/23/2018

Avient Presentation at Baird Sustainability Conference - 2/23/2021 PolyOne IR Presentation - Seaport Global Transports & Industrials Conference - 3/23/2018

Avient Presentation at Baird Sustainability Conference - 2/23/2021 PolyOne IR Presentation - Seaport Global Transports & Industrials Conference - 3/23/2018

Avient Presentation at Baird Sustainability Conference - 2/23/2021 PolyOne IR Presentation - Seaport Global Transports & Industrials Conference - 3/23/2018

Avient Presentation at Baird Sustainability Conference - 2/23/2021 PolyOne IR Presentation - Seaport Global Transports & Industrials Conference - 3/23/2018

With a dielectric constant (Dk) range spanning 2.55 to 23, these materials are optimized to boost antenna efficiency and deliver lightweight solutions for 5G infrastructure and devices. KEY CHARACTERISTICS • Stable and controlled dielectric performance up to a frequency range of 220 GHz • Dk range spanning 2.55 to 23 • Ultra-low transmission loss at mmWave • Allow high design flexibility, part miniaturization and weight reduction • Easy processability MARKETS & APPLICATIONS These high frequency, conductive materials support the rapid deployment of 5G in industries ranging from telecommunications and consumer electronics to automotive and healthcare. KEY PROPERTIES AND PERFORMANCE FR GRADES H GRADES PEEK GRADES LCP GRADES FLEX GRADES PROPERTIES CONDITION ISO UNIT PPE400FR PPE700FR PPE950FR PPE1200FR H1500HF H2300HF PEEK700 PEEK900 PEEK1000 PEEK1200 LCP650 LCP800 LCP950 FLX400 FLX700 FLX1100 Dielectric Constant (Dk) 2.4 GHz 4.0 7.0 9.5 12.0 15.0 23.0 7.0 9.0 10.0 12.0 6.5 8.0 9.5 4.0 7.0 11.0 Loss Tangent (Df) 2.4 GHz 0.0030 0.0039 0.0042 0.0045 0.0010 0.0037 0.0024 0.0025 0.0024 0.0027 0.0043 0.0045 0.0047 0.0010 0.0009 0.0012 Density 1183 g/cm3 1.44 1.97 2.20 2.50 2.60 3.40 1.94 2.20 2.30 2.40 2.00 2.15 2.30 1.52 1.93 2.50 Melt Flow Index (MFI) 5 kg, 300 °C (unless noted) 1113 g/10 min 17 12 13 5 5 8 15 @ 380 °C 13 @ 380 °C 10 @ 380 °C 6 - - - 11 @ 230 °C 2 @ 230 °C 0.3 @ 230 °C Tensile Strength at Break 23 °C/73 °F 527 MPa 47 52 44 45 23 40 64 62 65 67 75 80 75 11 17 25 Flexural Modulus 23 °C/73 °F 178 MPa 3100 4500 - 9300 2100 5000 6200 7600 9200 11000 8000 8500 8500 1400 1600 2900 Unnotched Izod 23 °C/73 °F 180 kJ/m2 NB 42 20 9 17 10 28 25 18 15 31 20 12 NB NB NB -20 °C/-4 °F 180 kJ/m2 - - - - 17 10 - - - - - - - - - Notched Izod 23 °C/73 °F 180 kJ/m2 14 6 4 3 5 4 6 4 4 4 10 6 4 59 23 13 -20 °C/-4 °F 180 kJ/m2 - - - - 5 4 - - - - - - - - - - STANDARD GRADES RADOME GRADES PROPERTIES CONDITION ISO UNIT PPE260 PPE300 PPE320 PPE350 PPE400 PPE440 PPE500 PPE650 PPE800 PPE950 PPE1200 RS260 RB260 RS265FR Dielectric Constant (Dk) 2.4 GHz 2.6 3.0 3.2 3.5 4.0 4.4 5.0 6.5 8.0 9.5 12.0 2.6 2.6 2.7 Loss Tangent (Df) 2.4 GHz 0.0009 0.0009 0.0010 0.0009 0.0009 0.0009 0.0009 0.0009 0.0009 0.0009 0.0010 0.0009 0.0012 0.0032 Density 1183 g/cm3 1.07 1.18 1.21 1.27 1.43 1.50 1.62 1.86 2.10 2.20 2.40 1.06 1.08 1.09 Melt Flow Index (MFI) 5 kg, 300 °C 1113 g/10 min 15 15 16 14 14 14 15 11 10 4 2 21 16 25 Tensile Strength at Break 23 °C/73 °F 527 MPa 40 45 47 50 50 48 45 43 37 37 36 50 42 52 Flexural Modulus 23 °C/73 °F 178 MPa 2700 2400 2000 2600 2800 2700 2600 2600 2300 2600 2600 2200 2200 2600 Unnotched Izod 23 °C/73 °F 180 kJ/m2 NB NB NB NB NB NB NB NB 50 28 24 NB NB NB -20 °C/-4 °F 180 kJ/m2 NB NB NB NB NB NB NB 50 47 27 25 NB NB NB Notched Izod 23 °C/73 °F 180 kJ/m2 8 55 69 35 22 20 15 9 8 5 4 19 14 11 -20 °C/-4 °F 180 kJ/m2 8 15 20 14 12 10 9 8 8 5 4 10 12 10 PREPERM™ SERIES PROPERTIES CONDITION ISO UNIT 8027 8025 8037 8019 8028 8026 8044 8029 8041 8045 8048 8036 8056 8031 Dielectric Constant (Dk) 1 GHz, 23 °C 3.0 3.1 3.4 3.6 3.8 4.4 4.8 5.3 5.4 5.9 6.0 7.0 7.3 9.0 Loss Tangent (Df) 1 GHz, 23 °C 0.0012 0.0012 0.0008 0.0010 0.0010 0.0010 0.0004 0.0008 0.0006 0.0002 0.0006 0.0007 0.0002 0.0007 Density 1183 g/cm3 1.25 1.26 1.35 1.39 1.45 1.59 1.72 1.75 1.79 1.89 1.88 2.06 2.086 2.25 Melt Flow Index (MFI) 5 kg, 300 °C 1113 g/10 min 16 19 10 11 15 13 10 10 15 15 19 10 18 4.7 Tensile Strength at Break 23 °C/73 °F 527 MPa 59 54 54 62 59 54 52 58 52 45 49 45 37 38 Flexural Modulus 23 °C/73 °F 178 MPa 2780 2560 2850 3060 3350 3700 3157 4300 4320 3137 4150 3370 2560 4200 Notched Izod 23 °C/73 °F 180 kJ/m2 15.3 14 14.8 14 12.6 10.4 9.9 8.6 7.4 7.9 6.6 7.1 6.2 6.8 EDGETEK™ 7600 SERIES Copyright © 2021, Avient Corporation.

Date of registration: 2018/08/21 Published: 2018/08/23 Effective: 2018/08/21 ... 8. Date of registration: 2018/08/21 Published: 2018/08/23 Effective: 2018/08/21 ... 21. Date of registration: 2018/08/21 Published: 2018/08/23 Effective: 2018/08/21 ... 3.