L A B O R ATO RY E Q U I P M E N T M A N U FA C T U R E R P C R W E L L P L A T E S • Very high level of TiO2 to prevent “cross-talk” between the wells during the qPCR fluorescence testing procedure • Minimized background phosphorescence caused by agglomeration of TiO2 and/or oxidized (stressed) polystyrene • Preservation of polystyrene grade properties • Change control of formulation and manufacturing process • Robust product quality from batch to batch • Developed optimally dispersed, ready-to-use white formulation that maintains adequate signal transmission, as well as minimizing “cross-talk” and background phosphorescence • Optimized the use of general purpose polystyrene (GPPS) for a good balance between melt flow and other physical properties, such as stiffness • Provided comprehensive change control of raw materials and formulation, with a robust manufacturing process and quality control under a third party ISO 13485:2016 certified QMS Mevopur Healthcare Colorants and Formulations – pre-colored solution WHY AVIENT?

As such, we manage both water and biodiversity responsibly, and in accordance with applicable laws, but these topics do not reach the threshold of materiality compared with other operational areas.

S A F E T Y E Q U I P M E N T M A N U FAC T U R E R R E S P I R A T O R A C C E S S O R Y P A R T S • Black color concentrate suitable for use in butyrate (PSU) • Low let down ratio (LDR) • Quick turnaround time • Offered compatibility with desired resin system in required color (Deep Black – OC9UFA) • Provided low usage rate of 1% LDR • Afforded immediate availability of sample for testing and ordering Omnicolor™ Multipurpose Colorants KEY REQUIREMENTS WHY AVIENT?

T P E E A N D T P U F I L M M A N U FAC T U R E R H O T M E L T A D H E S I V E F I L M • Anti-phenol yellowing after storage • Keep natural color of product • No impact on melt flow ability • Prevented the appearance quality from yellowing after storage • Had no negative impact on the product’s mechanical properties • Extended the shelf life and durability of the product CesaTM Anti-phenolic Yellowing Additive KEY REQUIREMENTS WHY AVIENT AVIENT SOLUTION FUNCTIONALITY + CONVENIENCE LEARN MORE Avient Corporation 1 https://www.avient.com/products/polymer-additives Slide 1: TPEE and TPU Film MANUFACTURER

AVIENT CORPORATION P R O F O R M A F I N A N C I A L S F O R D Y N E E M A A C Q U I S I T I O N A N D D I S T R I B U T I O N A S D I S C O N T I N U E D O P E R A T I O N S (NYSE: AVNT) S E P T E M B E R 2 7 , 2 0 2 2 DISCLAIMER Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. You can identify these statements by the fact that they do not relate strictly to historic or current facts.

Wire & cable manufacturer W I R E & C A B L E M A N U FAC T U R E R A E R O N A U T I C D A T A T R A N S M I S S I O N C A B L E S • Permanent contrast marking meeting aerospace industry standards SAE AS4373F and EN-3475-706 • Benign marking that, compared to infrared (IR) laser marking, will not damage the jacket surface • Elevated temperature performance in corrosive environments, maintaining dielectric properties under continuous service • No vital optical fiber or data transmission cable interference • Demonstrated fluorinated ethylene propylene (FEP) application expertise incorporating laser marks • Provided formulation expertise in PTFE alternatives • Delivered a high-quality product with no clumping during the extrusion process • Offered a proven array of specific aeronautic colors • Provided commercial, technical, and operational support KEY REQUIREMENTS APPEARANCE + PERFORMANCE WHY AVIENT?

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?

DIVING BOARD SPRING D I V I N G B O A R D S P R I N G P O O L D E C K E Q U I P M E N T M A N U FA C T U R E R • Non-corrosive alternative to steel springs to prevent rust, degradation and staining of pool decks • Flexible and durable to prolong product life • Provided a corrosion-proof composite material to prevent rust stains on pool decks • Delivered a custom-shaped compression molded spring capable of deep deflection and high fatigue resistance for extended product life • Reduced weight by 75% compared to steel, resulting in lower shipping and installation costs Gordon Composites™ Molded Unidirectional Thermoset Barstock 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?

PAC K AG I N G C O M P O N E N T M A N U FAC T U R E R P E R F U M E C A P • A density modified formulation - PP filled, 1,2g/cm3 • Needs to contain recycled PP PIR content • Electroplatable - comparable to prime materials • Provide continuity of supply • Utilized formulation expertise to develop a custom material with post-industrial recycled PP content • Provided a more sustainable solution with 60% recycled content while maintaining the performance characteristics of prime PP • Expedited speed to market, delivering material in three weeks Gravi-Tech™ REC Recycled Formulation KEY REQUIREMENTS WHY AVIENT?