Whether your application demands can be supported by the NEUSoft Express color palette or require customization, all our NEUSoft TPUs are designed with patient safety and regulatory specifications in mind, complying with ISO 10993 and USP Class VI standards. Copyright © 2024, Avient Corporation. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application.

G LO BA L E L E C T R I C A L P RO D U C T S O E M E L E C T R I C A L C O M P O N E N T S • Supplement internal engineering team by tapping into a supplier’s UL Prospector knowledge and expertise • Assistance in managing color proliferation and new product implementation • Achieve consistent color performance across a wide variety of resins • Enhance operational efficiencies and end-user safety • Provided exceptional technical service with broad resin choices and a direct link to UL Prospector offerings • Offered comprehensive pre-testing of colors and samples to meet project requirements • Ensured regulatory compliance across the value chain • UL-recognized certification lab supporting a full colorant and additive portfolio OnColor™ UL 94 Colorants KEY REQUIREMENTS WHY AVIENT AVIENT SOLUTION TECHNICAL SUPPORT + UL LISTINGS LEARN MORE © 2023, Avient Corporation, All Rights Reserved https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-ul94-colorants

Comptek, SilCoTec, Gordon Composites and Polystrand, including whether such businesses will be accretive, retain the management teams of acquired businesses, and retain relationships with customers of acquired businesses; disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; our ability to achieve new business gains; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; changes in polymer consumption growth rates and laws and regulations regarding the disposal of plastic in jurisdictions where we conduct business; changes in global industry capacity or in the rate at which anticipated changes in industry capacity come online; fluctuations in raw material prices, quality and supply and in energy prices and supply; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; an inability to achieve or delays in achieving or achievement of less than the anticipated financial benefit from initiatives related to working capital reductions, cost reductions and employee productivity goals; an inability to raise or sustain prices for products or services; our ability to continue to pay cash dividends, including at the increasing rate, which will be subject to, among other factors, market conditions, our cash flow and cash requirements and restrictions contained in any of our debt agreements; and other factors affecting our business beyond our control, including, without limitation, changes in the general economy, changes in interest rates and changes in the rate of inflation. news library online, please go to www.avient.com/news

The GeonTM brand name carries strong recognition globally. POLYONE CORPORATION [THIS PAGE INTENTIONALLY LEFT BLANK] Exhibit 31.1 CERTIFICATION I, Robert M. POLYONE CORPORATION Exhibit 32.2 CERTIFICATION PURSUANT TO 18 U.S.C.

A NEW PCR COLORATION TOOL Avient has developed a digital tool to help assess the impact of colored, recycled resins (PCR) prior to laboratory trials. KEY CHARACTERISTICS • Helps transition to high levels of PCR • Facilitates transfer from one PCR to another • Considers mixed grades of PCR • Works with transparent, translucent and opaque colors • Globally available with local expertise MARKETS & APPLICATIONS • Recycled PET and polyolefins • Packaging and consumer products • Injection molding • EBM (monolayer bottles) 1.844.4AVIENT www.avient.com Copyright © 2022, Avient Corporation. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application.

DIAGNOSTICS MANUFACTURER C O V I D - 1 9 C O N T A I N M E N T T U B E S C R E W C A P S • Wide range of durometers with consistent raw materials • Processing consistencies across the durometer ranges for an easy transition between materials • Materials formulated without animal derivatives at a competitive cost • Offered a comprehensive range of solutions to accommodate specific application demands such as barrier, flexibility, and sealing performance • Provided materials manufactured in an ISO 13485 certified facility • Delivered a series of medical-grade TPEs that could be extruded and injection molded Versaflex™ HC 3810 Thermoplastic Elastomers KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION DUROMETER RANGE + FORMULATED WITHOUT ANIMAL DERIVATIVES LEARN MORE Copyright © 2021, Avient Corporation.

MEDICAL TUBING EXTRUDER B I O P H A R M A C E U T I C A L T U B I N G • Low leachables & extractables • Great tensile performance and kink resistance • Good thermal weldability • Excellent clarity and medical blue tint • ISO 10993-4 & 5, USP Class VI & Animal Derivative Free (ADF) • Supplied drop-in material replacement to overcome supply constraints of incumbent TPE • Offered a lower extractable profile than comparable materials in the market • Enabled easy material transition without changes in tooling or thermal welding machine settings • Formulated solution with proprietary additives to provide clarity and prevent yellowing after sterilization Versaflex™ HC BT218 Thermoplastic Elastomer KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION LOW EXTRACTABLES LEARN MORE Copyright © 2021, Avient Corporation.

O RT H O P E D I C PA RT S M A N U FAC T U R E R O R T H O P E D I C S O L E I N S E R T • A super soft TPE ( AVIENT SOLUTION HAPTICS + BIOCOMPATIBILITY LEARN MORE © 2024 Avient Corporation, All Rights Reserved https://www.avient.com/products/thermoplastic-elastomers/versaflex-thermoplastic-elastomers

Globale Kartellrichtlinie von Avient Aktualisiert: Februar 2021 Inhalt Überblick über die Richtlinie 1 Ein Überblick über die US-Kartellgesetze 2 Verstöße gegen das Kartellrecht 3 Potenzielle Problembereiche in Bezug auf das Kartellrecht 4 Fazit 6 Meldung möglicher Verstöße 7 Ethik-Hotline von Avient 7 Schutz vor Vergeltungsmaßnahmen 7 Checkliste Kartellrecht 8 Kurzübersicht: RICHTIG und FALSCH im Kartellrecht 10 Compliance-Leitfaden Avient verpflichtet sich zur Förderung eines fairen und freien Wettbewerbs. Jedes dieser Gesetze verfolgt einen anderen Ansatz und zusammen bilden sie den Grundpfeiler der US-Kartellgesetze sowie die Grundlage vieler globaler Gesetze. 1. Es sollte stets bedacht werden, dass Kunden und Lieferanten von Avient ebenfalls Konkurrenten von Avient sein könnten

Avient Attains ACC Responsible Care® 14001 Global Certification for Environmental, Health, Safety, and Security Excellence Avient conducted Responsible Care® 14001 workshops at facilities in Italy and Mexico as part of Attaining ACC Responsible Care® 14001 Global Certifi Avient Announces First Quarter 2025 Results...