000870.E/24.R Würzburg, 23.05.2024 Benjamin Kirchgeßner Certification Body Certificate The SKZ - Cert GmbH certifies to the company Avient Th. This certificate is valid from: 23.05.2024 bis: 19.05.2027 Certificate No.: 000870.E/24.R Würzburg, 23.05.2024 Benjamin Kirchgeßner Certification Body Appendix to certification number: 000870.E/24.R Avient Th.

Versaflex HC - Syringe Plunger - English SYRINGE MANUFACTURER D I S P O S A B L E S Y R I N G E P L U N G E R • USP VI and ISO 10993-4,5 compliant • Sterilize by gamma & EtO • Long-term sealing performance • Low coefficient of friction (COF) • Consistent performance across barrel sizes • Provided a formulated solution that met rigorous medical application requirements • Improved global supply continuity • Increased process efficiency by replacing previous thermoset material with TPE Versaflex™ HC 2110-57B KEY REQUIREMENTS WHY AVIENT?

artery tourniquet ARTERY TOURNIQUET MANUFACTURER G A S K E T O F R A D I A L A R T E R Y H E M O S T A T • Super soft feeling • Increased production efficiency by simple injection process • High transparency • Delivered a series of soft-touch TPEs capable of meeting the desired feel • Formulated solutions to comply with FDA regulation for skin contact • Provided easy molding and assembling by onsite technical and customized durometer Customized Versaflex™ TPEs KEY REQUIREMENTS WHY AVIENT?

WIRELESS CHARGER BRAND W I R E L E S S C H A R G E R • Good surface finish • UV and stain resistance • Abrasion resistance • Bonding to PC • Provided total solution for product with excellent surface results plus on-site technical support to improve customer’s yield • Improved excellent UV and stain resistance performance to meet stringent requirements • Delivered outstanding anti-abrasion and anti-scratch performance Versaflex™ CE 3130-80N TPE KEY REQUIREMENTS WHY AVIENT?

Dental tool oem DENTAL TOOL OEM D E N T A L E Q U I P M E N T • Outstanding resistance to cleaning agents • Excellent impact resistance • Excellent processing performance • Color consistency • Provided a variety of color design possibilities • Supplied food contact and biocompatible grades • Offered customizable high-performance solutions able to withstand multiple cleaning cycles with detergents • Enabled flexible MOQ and supply Colorant Chromatics Pre-colored Grey PSU KEY REQUIREMENTS WHY AVIENT?

POWER TOOL BRAND D I A S T I M E T E R C O V E R • Anti-static properties to enable stable and accurate measurements • Good wear resistance to avoid friction between TPE-made part and the internal metal part • Met anti-static standard surface resistivity 109-1010 Ω/m2which reduced error for circular measurement by 55% and linear measurement by 33% • Provided a formulation with better wear resistance than the previous overmold material • Offered excellent bond adhesion to PC/ABS Versaflex ™ OM Thermoplastic Elastomer KEY REQUIREMENTS WHY AVIENT?

AEROSPACE INTERIORS OEM S E A T S P A C E R & A R M R E S T • Weight reduction to increase airliner fuel economy • Meet FAA safety requirements for FST compliance and 16G kinetic survivability • Agility to delivery solution within 8-month compressed product development timeline • Achieved 40% weight reduction generating $16,000 per year reduction in fuel costs • Optimized component designs for long fiber material and conducted FEA validation • Performed prototype molding and testing for load and impact specifications to expedite development Complēt™ Long Carbon Fiber PES Composite KEY REQUIREMENTS WHY AVIENT?

MAJOR TELECOM COMPANY B A S E S T A T I O N P H A S E S H I F T E R • Required customized Dk / Df values tailored to a unique antenna design • Quick qualification of designs and short lead times were critical to support the rapid rollout of new 5G networks • Met required Dk / Df properties using two customized solutions offering Dk 3.6, Df 0.0006 and Dk 3.1, Df 0.0007 • Accelerated speed to market due to thermoplastics’ design flexibility Custom Edgetek™ Formulations KEY REQUIREMENTS WHY AVIENT?

OUTDOOR HIGH PERFORMANCE MANUFACTURER M A R I N E A C C E S S O R I E S • High strength • High UV resistance • Structural stiffness • Provided multiple nylon grades for several marine accessories • Complemented customer expertise with application development insight and technical support in material selection • Eliminated supply concerns by serving as a single, stable source for numerous materials Nymax™ PIR Post-Industrial Recycled Nylon Formulations KEY REQUIREMENTS WHY AVIENT?

CABLE MANUFACTURER J A C K E T F O R P O W E R C A B L E • High tear resistance > 11 N/mm • High environmental stress cracking resistance (ESCR) • Cost efficient solution • Hot pressure resistance above 80°C • Provided a jacket solution that complies with LTS1 requirements as per the BS 7655-6.1 standard • Enabled use in over-armored cables operating at a maximum conductor temperature of 90°C • Supported our customer in optimizing the processing of the new material ECCOH LSFOH 5983 Formulation KEY REQUIREMENTS WHY AVIENT?