Senior management believes these measures are useful to investors because they allow for comparison to Avient's performance in prior periods without the effect of items that, by their nature, tend to obscure Avient's operating results due to the potential variability across periods based on timing, frequency and magnitude. In addition, operating income before the effect of special items is a component of Avient's annual incentive plans and is used in debt covenant computations. Senior management believes these measures are useful to investors because they allow for comparison to Avient's performance in prior periods without the effect of items that, by their nature, tend to obscure Avient's operating results due to the potential variability across periods based on timing, frequency and magnitude.

Senior management believes these measures are useful to investors because they allow for comparison to Avient's performance in prior period s without the effect of items that, by their nature, tend to obscure Avient's operating results due to the potential variability across periods based on timing, frequency and magnitude. In addition, operating income before the effect of special items is a component of Avient's annual incentive plans and is used in debt covenant computations. Senior management believes these measures are useful to investors because they allow for comparison to Avient's performance in prior periods without the effect of items that, by their nature, tend to obscure Avient's operating results due to the potential variability across periods based on timing, frequency and magnitude.

ISO 13485:2016 The Quality Management System is applicable to: Certificate No: 54139 Certification Date: 04 September 2019 Effective Date: 29 August 2022 Expiration Date: 01 September 2025 Revision Date: 29 August 2022 Dominic Townsend, President This certificate may be found on the ABS QE Website (www.abs-qe.com).

ISO 13485:2016 The Quality Management System is applicable to: Certificate No: 65567 Effective Date: 08 September 2023 Expiration Date: 07 September 2026 Revision Date: 08 September 2023 Dominic Townsend, President This certificate may be found on the ABS QE Website (www.abs-qe.com).

1616267 Certification Effective Date: April 1, 2021 Issue Date: March 30, 2021 Certificate Expiry Date: March 31, 2024 ________________________________________________________________________________ ISO 9001 Registered by: QMI-SAI Canada Limited (SAI Global), 20 Carlson Court, Suite 200, Toronto, Ontario M9W 7K6 Canada.

AU TO M OT I V E A F T E R M A R K E T M A N U FAC T U R E R S T O R A G E B O X L A T C H • Low coefficient of friction (CoF) to allow for ease-of-use • Colorable to a brand-specified Pantone color • Low odor in the end product • Maintain performance when exposed to outdoor elements and extreme temperatures • Offered lubricious polyketone (PK) material to facilitate easy slide and effective latching • Provided excellent chemical resistance to cleaning and harsh chemicals, such as bleach, isopropyl alcohol and automotive fluids • Formulated a durable material with abrasion resistance, UV stability, and tolerant of temperatures from 0°-140°F • Delivered surety of supply vs. incumbent material LubriOne™ PKE Polyketone Formulations KEY REQUIREMENTS WHY AVIENT?

ISO 9001:2015 The Quality Management System is applicable to: Certificate No: 47804 Certification Date: 07 January 2013 Effective Date: 17 December 2018 Expiration Date: 06 January 2022 Issue Date: 17 December 2018 Alex Weisselberg, President This certificate may be found on the ABS QE Website (www.abs-qe.com).

L E A D I N G B I OT E C H M A N U FAC T U R E R C O N D U C T I V E P I P E T T E T I P S • Accuracy of liquid measurements • Hydrophobic properties to minimize fluid retention • Concentric dimensional stability and warp resistance • High flow properties for multi-cavity molds • Offered consistent electrical conductivity to achieve repeatable part performance and minimize failures from inconsistent conductivity • Provided high flow grade with easy processing to improve efficiency and cost effectiveness • Achieved high stiffness and warp resistance, minimizing the rejection rate Trilliant™ HC Conductive Formulation KEY REQUIREMENTS WHY AVIENT?

© 2019, All Right Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 LED LIGHT MANUFACTURER H E A T E X C H A N G E R F O R A N E L E C T R O N I C C I R C U I T B O A R D • Looking to replace aluminum • Reduce corrosion • Light weighting • Eliminated the effects of corrosion • Provided a lightweight alternative to aluminium • Redesigned the part for easier processing and further weight reduction • Enabled the customer to take a new, innovative product in to the market Therma-Tech™ Thermally Conductive Formulation KEY REQUIREMENTS WHY AVIENT?

© 2019, All Right Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 B U I L D I N G A N D C O N S T R U C T I O N S U P P L I E R H E A T E X C H A N G E R : G A S R E C O V E R Y • Resistance to corrosion and fouling • Good thermal conductivity • Good pressure resistance • Compatible with current processing methods – extrusion • Eliminated the effects of corrosion and fouling by replacing aluminum • Improved thermal performance over time • Developed a customized solution that utilized the customers existing extrusion processing methods Therma-Tech™ Thermally Conductive Formulation KEY REQUIREMENTS WHY AVIENT?