DOCUMENT NUMBER_ SSS-003 CATEGORY DETAIL EC Number 215-175-0 CAS Number 1309-64-4 Name Subclass 1 Antimony Trioxide (ATO) Structural Formula CHEMICAL IDENTITY PROPERTY DETAIL Physical State Solid Form Powder Color White Odor Odorless Melting Point 656°C Boiling Point 1425°C Bulk Density 5.20 g/cm3 Water Solubility Slightly Soluble PHYSICAL/ CHEMICAL PROPERTIES DOCUMENT NUMBER_ SSS-003 HEALTH EFFECTS HUMAN HEALTH SAFETY ASSESSMENT Consumer It is very unlikely that consumers would be exposed to ATO in its concentrated form because it is only sold for industrial use to make polymers and other products and is not sold directly to consumers.

Available for different processings, such as film blowing, tape casting, biaxial stretching and sheet extrusion • Suitable for different industries such as food, beverages, consumer goods and industrial • Addition rate depends on the specific requirements and application • Can be customized to meet customer requirements for colors BRANDS • CESA™ • ColorMatrix™ • HIFORMER™ • OnCap™ • RENOL™ To learn more, please visit avient.com or call +86 21 28981188

& Canada 49% Europe 25% Asia 17% Latin America 9% SEGMENT, END MARKET AND GEOGRAPHY 5 GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 23% Packaging 21%Industrial 15% Wire & Cable 7% Building & Construction 6% Electrical & Electronics 4% END MARKET REVENUE Transportation 9% Healthcare 15% All data reflects 2020 estimate and Pro forma for acquisition of the Clariant Masterbatch business. (1) The total company sales and EBITDA of $3,650M and $425M, respectively, include intercompany sales eliminations and corporate costs $2,000M $310M $685M $115M $1,050M $65M Sales EBITDA Distribution Specialty Engineered Materials Color Additives and Inks $425M$3,650M (1) Innovation is the lifeblood of a specialty company. Design times can be less than three days for colorants. There are significant revenue opportunities generated from the combined color and additive technology strengths of the two legacy companies.

1) The total company sales and EBITDA of $3,700M and $440M, respectively, include intercompany sales eliminations and corporate costs $2,015M $320M $700M $120M $1,100M $70M Sales EBITDA Distribution Specialty Engineered Materials Color Additives and Inks $440M$3,700M (1) Innovation is the lifeblood of a specialty company. Design times can be less than three days for colorants. There are significant revenue opportunities generated from the combined color and additive technology strengths of the two legacy companies.

Additionally, Adjusted EPS excludes the impact of special items and amortization expense associated with intangible assets. 2 O P E N I N G R E M A R K S B O B P A T T E R S O N C H A I R M A N , P R E S I D E N T A N D C E O Complementary technologies and customer relationships offer opportunity to advance commercial strategy Dyneema®, the world’s strongest fiber™, to accelerate growth of sustainable, ultralight and high performance applications AVIENT PROTECTIVE MATERIALS FIRST YEAR 4 Composites comprises over half of Specialty Engineered Materials, compared to 9% in 2016 Proven history of success in areas such as outdoor high performance, defense and sustainable solutions Composites 44% 56% 2023E Sales Collaboration & InnovationComposites as a % of SEM People & Culture Talented, passionate, and creative associates drive continued integration success and allow two cultures to come together as one Avient Lightweight Protective Laminates: PROJECTILE PROTECTION Dyneema® Fiber Solutions Cushioning + Fit + Comfort: LONG-TERM WEAR reSound™ Versaflex™ Thermoplastic Elastomers Strength + Durability + Light-Weighting: SOLID MOUNTING BRACKETS Nymax™ Bergamid™ Complēt™ Engineered Materials Durability + Lubricity: HELMET LATCHES Lubri-One™ Internally Lubricated Polymers Color Consistency and Weatherability CUSTOMIZED SPECIFICATIONS Avient Color and Additive Solutions Antennae Performance FAST, RELIABLE CONNECTIONS PREPERM™ Low-Loss Dielectric Thermoplastics AVIENT PROTECTIVE MATERIALS C R O S S S E L L I N G O P P O R T U N I T I E S Wired Connections CONSTANT COMMUNICATION Syncure™ Cross-linkable Wire & Cable Formulations5 6 AVIENT PROTECTIVE MATERIALS C R O S S S E L L I N G O P P O R T U N I T I E S 6 Q 3 P E R F O R M A N C E 15.4% 16.3% 2022 PF 2023 Results vs.

Avient also offers custom configurations including fiber concentration, additives, and colors based on our customers’ requirements.

• Fiber reinforcement percentage (ranging from 20–70% fiber content, by weight) • Additive technologies (color, UV enhancement, flame retardancy, heat stabilization, etc.)

They also add important characteristics, such as SWELLCOAT® water-blocking, water repellence, adhe- sion, color, and wear and UV-resistance to these and many other applications.

Treat employees with respect and refrain from harassing or discriminating against individuals based on race, sex, sexual orientation, gender identity, age, color, religion, national origin, disability, genetic information, protected veteran’s status, or other legally protected classifications

Treat employees with respect and refrain from harassing or discriminating against individuals based on race, sex, sexual orientation, gender identity, age, color, religion, national origin, disability, genetic information, protected veteran’s status, or other legally protected classifications