Park, Pudong, Shanghai China, 201203 and the sites as mentioned in the appendix accompanying this certificate has been found to conform to the Quality Management System standard: GB/T 19001-2016/ISO 9001:2015 This certificate is valid for the following scope: Design and Manufacture of Masterbatch Certificate No: 7071-1998-AQ-RGC-RvA Place and date: Shanghai, 19 March, 2021 Lack of fulfilment of conditions as set out in the Certification Agreement may render this Certificate invalid. TEL:+31(0)102922689. www.dnvgl.com/assurance Page 2 of 2 Appendix to Certificate PolyOne-Shanghai, China Locations included in the certification are as follows: Site Name Site Address Site Scope PolyOne Polymer (Tianjin) Company Limited No.28#C, Jin Bin Hi-Tech Industrial Park, 156 Nan Hai Road, Tianjin Economic-Technological, Tianjin, China, 300457 Manufacture of Masterbatch PolyOne-Shanghai, China No. 88, Guo Shou Jing Road, Z. Park, Pudong, Shanghai, China, 201203 Design and Manufacture of Masterbatch

Microsoft Word - Letter Detail Bank Account.docx Avient Colorant Malaysia Sdn Bhd Formerly Known as Clariant Masterbatches (M) Sdn Bhd Company No: 199701025292 (440790-X) Shah Alam Office: Butterworth Site: No. 79 & 80, Hicom Sector B, Lot 1232, MK. 15, Jalan Teluk Gadung 27/93A, Kawasan Industri Kecil & Sederhana, 40000 Shah Alam, Simpang Ampat, Selangor Darul Ehsan, Malaysia. 14120 S.P.S. Tel: (603) 5101 2888 Fax: (603) 5191 8718 Tel: (604) 588 0668 Fax: (604) 588 0590 www.avient.com Date : 17 May 2021 Dear Valued Customer, RE : Electronics Payment Info COMPANY : Bank Account Name: Avient Colorants Malaysia Sdn Bhd Formerly known as CLARIANT MASTERBATCHES (M) SB Business Registration No.: 199701025292 (440790X ) Address : Lot 1232, MK 15, Kawasan Industri Kecil & Sederhana, Simpang Ampat, 14120 S.P.S. Yours faithfully, For and on behalf of, Avient Colorants Malaysia Sdn Bhd Formerly known as Clariant Masterbatches (M) Sdn Bhd This is computer generated document and no signature is require

Increased Clariant Masterbatch cost synergy estimate to $75 million from preliminary estimate of $60 million NYSE: AVNT), a leading provider of specialized and sustainable material solutions, provided third quarter financial performance expectations today as well as updated synergy estimates related to the Clariant Masterbatch acquisition. added, "We are also benefitting from the acquisition of the Clariant Masterbatch business, which has been immediately accretive to adjusted EPS." 

PW 6 Opaque CARBON BLACK Medium Jet C.I. PBk 7 Opaque IRON OXIDE BLACK C.I. SPECTROPHOTOMETER CONFIGURATION FOR COA Type: Datacolor Illuminate: D65 Daylight Observer: 10 degree, large area view, specular included EXPLANATION OF SPECTROPHOTOMETRIC VALUES DL* Lightness/Darkness Difference (Delta L*) The shade of gray (black/white) + = Lighter - = Darker Da* Red/Green Color Difference (Delta a*) + = Hue is redder (or less green than) - = Hue is greener (or less red than) Db* Yellow/Blue Color Difference (Delta b*) + = Hue is yellower (or less blue than) - = Hue is bluer (or less yellow than) DC* Difference Attributed to Chromaticity (Delta C*) + = More saturated than (more color intensity) - = Less saturated than (less color intensity) DH* Difference Due to Hue Only (Delta H*) DE* Total Color Difference (Delta E*) DE is a mathematical calculation utilizing the DL*, Da* and Db*, and therefore, used alone this number can be misleading as to the true color of a material.

Avient acquired the Clariant Masterbatch business (CMB) on July 1, 2020 (the “Acquisition Date”). Operating Income $3,783 $4,300 (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Previous Guidance Current Guidance $3,783 $4,650 $308 $410 $308 $430 $1.93 $2.80 $1.93 $3.00 (1) (1)(1) (1)(1) (1) $442 $457 $580 $1.74 $1.93 $3.00 FULL YEAR 2019 – 2021 ORGANIC GROWTH 16 Sales Adjusted EBITDA $3,981 $3,783 $4,650 + 17% (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (1)(1) + 31% + 72% ($ in millions) 2021E Adjusted EBITDA 580$ Free Cash Flow 280$ Total Debt 1,860 Less: Cash (755) Net Debt 1,105$ 2021E Net Debt / Adjusted EBITDA 1.9x 17 BALANCE SHEET • Acquisition of Magna Colours completed on July 1 – expands sustainable solutions portfolio through water-based inks technology • Deleveraging to 1.9x net debt to adjusted EBITDA by the end of 2021 • Driven by record adjusted EBITDA performance and strong free cash flow generation from asset light business • Future cash deployment: M&A, opportunistic share repurchases and balance sheet / continued leverage reduction 3.5x 2.7x 1.9x Net Debt / Adjusted EBITDA (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition SUSTAINABILITY FOR A BETTER TOMORROW • Revenue from sustainable solutions expected to grow 14% in 2021 as our innovation efforts and collaboration with customers continues to accelerate • Investments centered around innovation and global sustainability megatrends o Enabling a circular economy – Technologies that allow for increased use of post-consumer recycled (PCR) material and improve recyclability of plastics o Light-weighting – Composites and CAI applications to reduce weight and material requirements, which minimize energy and carbon emissions o Eco-Conscious – Health and human safety applications as well as Avient’s alternative materials to replace lead, PVC, halogens, BPA and other less eco-friendly options 2016 2017 2018 2019 2020PF** Bio-polymers Reduced Energy Use Human Health & Safety Sustainable Infrastructure VOC Reduction Recycle Solutions Eco-Conscious Lightweighting Revenue From Sustainable Solutions* 2016-2020 $405M $455M *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) **2020 is Pro Forma to include full year of the Clariant Masterbatch business $340M $550M $790M 19 Key Updates • Includes Clariant Masterbatch performance • Increases disclosures and ESG data • Provides performance updates on 2030 Sustainability Goals • Commits to operational carbon neutrality in 2050 and 100% renewable energy by 2050 (RE 100) • Announces Avient’s participation in U.N. We will deliver for our stakeholders through multiple value creation levers—many of which are unique to Avient: o Demand for sustainable solutions, healthcare, and composites, together with Clariant Masterbatch revenue synergies, that will drive long-term revenue growth in excess of GDP o Clariant Masterbatch cost synergy capture will result in significant near-term benefit In addition, we remain committed to increasing annual dividends in line with earnings growth and opportunistically buying back shares, all while remaining modestly levered.

New Rejoin™ PCR Masterbatch Makes 100 Percent PCR a Reality for Polyolefin Packaging CLEVELAND – March 12, 2021 – Avient today announced the launch of Rejoin™ PCR Masterbatch for polyolefin packaging applications.

When a lower-performing pigment is used in a material that is processed at a high temperature, the results are not pretty… the material often turns black or degrades. Adding a concentrate (masterbatch) to the natural resin during processing Pre-colored resins are formulated to an exact target shade, making it possible to create customized colors.

Pro forma for the acquisition of Clariant Masterbatch, the company noted sales for October and November increased 5.4% over the same months in the prior year.  Overall demand is better than we initially estimated in every region of the world, and we are capturing synergies related to our acquisition of Clariant Masterbatch," said continued, "These results also reflect the strong cultural fit between legacy PolyOne and legacy Clariant Masterbatch associates who have come together to create

PRODUCT MATERIAL DESCRIPTION COLOR MAX THICKNESS MAX WIDTH IN (CM) FLEXURAL MODULUS FLEXURAL STRENGTH GLASS GC-70-UL Glass/Epoxy Any 0.1 17.75 5.8 210 (1448) 70 GC-66-ULW Glass/Epoxy, 90° Weft Any 0.1 17.75 4.5 (31.03) 130 (896) 66 GC-70-ULS Glass/Epoxy, 1080 Woven Scrim Any 0.1 17.75 5.8 210 (1448) 70 GC-70-ULZ Glass/Epoxy Natural 0.04 (1.0) 8.75 6.8 (46.89) 245 (1689) 70 GC-70-ULC Carbon/Epoxy Black 0.04 (1.0) 8.0 (20.3) 19.9 (137.21) 300 (2069) 70 BARSTOCK All barstock composites are machined to size with a surface finish prepared to fit customer requirements. STANDARD BARSTOCK PRODUCTS PRODUCT MATERIAL DESCRIPTION COLOR MAX THICKNESS MAX WIDTH IN (CM) FLEXURAL MODULUS FLEXURAL STRENGTH GLASS GC-67-UB Glass/Epoxy Black 0.575 (14.6) 11.75 (29.8) 153 (1055) 67 GC-67-UBZ Glass/Epoxy Black 0.5 (12.7) 153 (1055) 67 GC-60-UBC Carbon/Epoxy Black 0.25 (6.35) 4.0 (10.2) 12.5 (86.19) (1034) 60 GC-67-UBW Glass/Epoxy, 90° Weft Blue 0.25 (6.35) 4.8 (33.10) (1034) 67 PULTRUDED PROFILES - TYPICAL PROPERTIES The Glasforms™ pultrusion process creates continuous, constant cross-sectional profiles with consistent, uniform quality and exceptional mechanical performance.

Printed results may vary based on production methods such as ink film thickness, opacity, and substrate. 66100 BEARS NAVY 90610 ELECTRIC RED 12600 TAN 74550 DARK GREEN 75900 BLACK LIGHT GREEN 67050 ROYAL 90810 ELECTRIC PURPLE 60000 NAVY 62100 LIGHT ROYAL 90410 ELECTRIC PINK 13300 RUSSELL GRAY 70550 KELLY GREEN 90110 ELECTRIC BLUE 90010 ELECTRIC YELLOW 14600 DARK GRAY 90210 ELECTRIC GREEN 90310 ELECTRIC ORANGE 19000 BLACK DIAMOND Copyright © 2022, Avient Corporation. For more information about Wilflex screen printing inks, please call 1.844.4AVIENT, email askspecialtyinks@avient.com or visit www.avientspecialtyinks.com or www.wilflex.com www.wilflex.com Yellow Swatch: Yellow: 1655 Swatch: 1655: 1795 Swatch: 1795: 2685 Swatch: 2685: 1235 Swatch: 1235: 116 Swatch: 116: Bright Red Swatch: Bright Red: 3546 Swatch: 3546: 7645 Swatch: 7645: 137 Swatch: 137: 1807 Swatch: 1807: 227 Swatch: 227: 1788 Swatch: 1788: 2397 Swatch: 2397: 2925 Swatch: 2925: 2768 Swatch: 2768: 805 Swatch: 805: 156 Swatch: 156: 3435 Swatch: 3435: 7488 Swatch: 7488: 287 Swatch: 287: 253 Swatch: 253: 296 Swatch: 296: 2145 Swatch: 2145: 806 Swatch: 806: 421 Swatch: 421: 348 Swatch: 348: 3005 Swatch: 3005: 809 Swatch: 809: 423 Swatch: 423: 2422 Swatch: 2422: 811 Swatch: 811: Black Diamond Swatch: PMS Black 3 C: