Certificate Number: CERT-0116814 Initial Certification Date: 24 November 2010 Date of Certification Decision: 25 March 2024 Issuing Date: 25 March 2024 Valid Until: 31 March 2027 Calin Moldovean President, Business Assurance Intertek Testing Services NA, Inc. dba Intertek, 4700 Broadmoor SE Suite 200 Kentwood, Michigan 49512, United States In the issuance of this certificate, Intertek assumes no liability to any party other than to the Client, and then only in accordance with the agreed upon Certification Agreement.

FIBER MANUFACTURER T E X T I L E S & F A B R I C S • Provide a Product Carbon Footprint (PCF) calculation to align with ISO 14067:2018 and to help in meeting sustainability goals • Procure feedstock from renewable resources • Maintain comparative performance to conventional carbon black • Achieve color stability under xenon arc and TUV testing • Offer solutions for rPET, PP, PE, PBT, and PA6 where a desire for environmentally responsible products exists • Offered sustainable platform approach supported by extensive fiber expertise • Helped meet sustainability targets while attaining all design and engineering goals • Supplied necessary PCF calculation certified by TÜV Rheinland and aligning with ISO 14067 requirements • Provided effective alternative to virgin carbon black • Achieved reductions in CO2e emissions vs.

LABORATORY EQUIPMENT MANUFACTURER 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?

AUTO DATA CABLE MANUFACTURER C O A X I A L S I G N A L C A B L E J A C K E T • Provide good chemical resistance like that of machine oil • Pass 3,000 hours aging test of finish goods • Have low dielectric property - characteristic impedance of transmission line: 100Ω, capacitance in water: around 102.8pf/m • Provided excellent performance with low dielectric constant to make the jacket layer of signal cables have low capacitance loss • Offered a solution by combining physical and chemical foaming products in the foaming layer to reduce the dielectric constant further • Maintained exceptional mechanical properties under high temperatures Maxxam Polyolefin Formulations KEY REQUIREMENTS WHY AVIENT?

These methods include: PULTRUSION • Fibers are impregnated with liquid thermoset resins, then pulled through a heated die to cure the resin and form the product • This continuous, automated manufacturing process creates constant cross section profiles of any pre-determined length with consistent, uniform quality and exceptional mechanical performance • Applications include rods and profiles of various lengths and complexities, such as utility poles, insulator core rods and structural beams CONTINUOUS FILAMENT WINDING • Combines the principles of filament winding with pultrusion to create constant or tapered cross- sectional tubing in precision sizes • The unique axial and biaxial fiber orientation provides flexural and tensile strength, as well as crush and burst resistance • Applications include lightweight shelter frames and sporting goods components CONTINUOUS RESIN TRANSFER MOLDING (CRTM™) • Engineered core materials are sandwiched between structural composite laminate face sheets • Continuous composite sandwich panels feature high specific strength and stiffness-to-weight ratio • Applications include ballistic resistant panels, truck floors and rail car doors CONTINUOUS FIBER REINFORCED THERMOPLASTICS • Fully recyclable tape, X-Ply™ (0°/90°), and other multi-ply configurations with widths up to 10' wide • Sandwich panels in unlimited lengths, up to 6" thick and 10' wide • High volume production capacity • Applications include structural and aerodynamic components in transportation, and reinforcement of materials such as wood and metal THERMOSET COMPOSITE LAMINATES & BARSTOCK • Unidirectionally reinforced barstock, laminates and hybrid composites engineered to maximize deflection and fatigue resistance • Customizable shapes and sizes • Applications include archery bow limbs, flat springs, prosthetics, sporting equipment THERMOSET FINISHING OPERATIONS • Customized finishing capabilities for barstock and laminates including machining, water-jet cutting, profiling/shaping, sanding, slitting, laminating, molding and coatings TESTING CAPABILITIES • Mechanical – Flexural, tensile, compression, shear, fatigue, impact resistance • Physical – Specific gravity/density, Barcol hardness, water absorption, void content, resin/fiber content, dye penetrant, viscosity • Thermomechanical – Coefficient of linear thermal expansion, glass transition temperature, deflection temperature, degree of cure, curing properties • Electrical – High-voltage, low current dry arc resistance of solid electrical insulation, dielectric strength, water diffusion ABOUT AVIENT ADVANCED COMPOSITES The Avient advanced composites portfolio consists of Glasforms™, Gordon Composites™ and Polystrand™ branded materials. You have the responsibility to conduct full-scale end-product performance testing to determine suitability in your application, and you assume all risk and liability arising from your use of the information and/or use or handling of any product.

We can help you optimize your process—including via hands-on testing and trials at our Denver-based Composites Innovation Cell—to achieve targeted part performance. You have the responsibility to conduct full-scale end-product performance testing to determine suitability in your application, and you assume all risk and liability arising from your use of the information and/or use or handling of any product.

You have the responsibility to conduct full-scale end-product performance testing to determine suitability in your application, and you assume all risk and liability arising from your use of the information and/or use or handling of any product. You have the responsibility to conduct full-scale end-product performance testing to determine suitability in your application, and you assume all risk and liability arising from your use of the information and/or use or handling of any product.

IMPROVED BOTTLE QUALITY +2% in neck +3% in body -12% in base 8.5g 0.5L bottle, 60% rPET Re-optimization of Polymer Weight Distribution to Improve Bottle Strength Based on commercially produced water bottles, 51,000bph Mechanical Strength Based on PTI 14.4g 0.5L water bottles, Instron testing To p Lo ad (l bs Burst Pressure Based on 8.5g, 0.5L commercially produced water bottles Bu rs t P re ss ur e (B ar REDUCED CO2 EMISSIONS 25% reduction in energy consumed during the bottle blowing process, based on a commercial process producing 8.5g 0.5L water bottles at 51,000 bph En er gy k W Reduced Energy Consumption ColorMatrix AAzure increases the heat-up rate for preforms, enabling energy reductions for the heating lamps used during the bottle blowing process. You have the responsibility to conduct full-scale end-product performance testing to determine suitability in your application, and you assume all risk and liability arising from your use of the information and/or use or handling of any product.

Streamlined product development services through Avient Design • Color inspiration and technical guidance from ColorWorks™ Design & Technology Centers • Risk mitigation through invaluable regulatory compliance support • Accelerated commercialization with UL testing and part validation, and UL- recognized colorants FOCUS AREA APPLICATIONS KEY REQUIREMENTS TECHNOLOGIES Visual Aesthetics • User interfaces and touchpoints • Interactive touch screens • Lighting • Side panels and base plates • Cables • Closeouts • Informed color choices and customization options • Visual appeal for brand integrity • High- and low- gloss finishes • Consistent physical performance and dimensional stability • Special effect colorants • Smartbatch Combination Colorants & Additives • Custom and pre-colored formulations • ColorWorks Design & Technology Centers Outdoor Durability & Longevity • Ventilation panels • Closeouts • Cable retractors • Interactive touch screens • Outdoor weathering • Extreme (hot/cold) temperature resistance • Flexibility and ductility • Impact resistance • Chemical resistance • UL-recognized materials • Flame retardant formulations • Impact modifiers • Surface energy modifiers • EMI/RFI shielding solutions • Thermal and electrical management technology Health & Hygiene • User interfaces and touchpoints • Cables • Sockets • Plugs and adaptors • Filters • Kiosks • Microbial and fungal efficacy • Safe to touch • Visual clarity • Surface energy modifiers • Antimicrobial and anti- fungal solutions Sustainability • Structural panels • Connectors and electrical components • Thermal modules • Lighting • Receptacles • Reduced part weight or materials consumed • Recyclability • VOC reduction • PCR incorporation • Lower carbon footprint • Chemical foaming agents • Molded-in color (MIC) metallics • Laser marking technologies • Eco-conscious raw materials • Bio-derived technologies • Post-consumer recycled (PCR) content • Lower carbon footprint solutions 1.844.4AVIENT www.avient.com Copyright © 2023, Avient Corporation. You have the responsibility to conduct full-scale end-product performance testing to determine suitability in your application, and you assume all risk and liability arising from your use of the information and/or use or handling of any product.

You have the responsibility to conduct full-scale end-product performance testing to determine suitability in your application, and you assume all risk and liability arising from your use of the information and/or use or handling of any product. You have the responsibility to conduct full-scale end-product performance testing to determine suitability in your application, and you assume all risk and liability arising from your use of the information and/or use or handling of any product.