ECert - 2020-11-17T151438.723.pdf Page 1 of 2 Validity of this certificate is based on the successful completion of the periodic surveillance audits of the management system defined by the above scope and is contingent upon prompt,written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof. ABS Quality Evaluations This is to certify that the Quality Management System of: Avient Corporation 4921 I D A Park Drive Lockport, NY 14094 U.S.A. Activity: Continuous Improvement, Contract Review, Customer Service, Human Resource, Information Technologies, Internal Audit Management, Logistics, Marketing, Product Design, Purchasing, Sales, Supplier Management

Senior management uses comparisons of adjusted net income from continuing operations attributable to Senior management believes these measures are useful to investors because they allow for comparison to Pro Forma for sale of PP&S.

Management believes this provides comparability of the performance of the combined businesses. Senior management also uses operating income before special items to assess performance and allocate resources because senior management believes that these measures are useful in understanding current profitability levels and how it may serve as a basis for future performance. EBITDA and Adjusted EBITDA are non-GAAP financial measures that management uses in evaluating operating performance.

Additionally, Avient’s self-assessments, based on ISO 9001/IATF 16949, are requested of suppliers in order to provide insight into the core components of their Quality Management Systems (QMS) and subsequently used as approval criteria for Avient’s most sensitive end applications. Embed sustainable sourcing practices with our suppliers through our third-party risk management (TPRM) program.

The board also believes that good corporate governance is achieved through effective oversight of management and the business affairs of the company. Composition of the Board, director responsibilities, access to management and independent advisors, director compensation, and director orientation and continuing education

At the same time, however, it produces considerable data that must be effectively managed with new time- and cost-efficient tools. Media contact Jennifer Huang  Senior Manager, Marketing Communications Asia  Avient Corporation   +86 21 60284888  jennifer.huang@avient.com

Color and design services: InVisiO℠ services and solutions help brand managers and designers leverage color design to reinforce brand recognition, communicate quality and favorable emotional associations, and increase functionality of their products by making the device easier or more intuitive to use. Media contact Michelle Maniscalco Marketing Communications Manager, North America PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com

Cautionary orange is a widely used color as a warning of potential safety hazards and is a preferred choice for automotive manufacturers to distinguish high-voltage power connectors and cables in electric vehicles from other parts,” said Bob Lee, General Manager, Color and Additives Greater China at Avient. Media Contact Jennifer Huang Senior Manager, Marketing Communications Asia +86 21 6028 4888 jennifer.huang@avient.com

Jennifer Huang Senior Manager, Marketing Communications Asia PolyOne Corporation +86 21 60284888 jennifer.huang@avient.com Michelle Maniscalco Senior Manager, Marketing Communications PolyOne Corporation +1 440 930 1988 michelle.maniscalco@avient.com

Differentiating with Color: InVisiOSM Color Inspiration 2015, a collection of six insightful color directions for designers, brands and marketing managers, adds dimension to trend indicators by capturing visual effects and textural influences as well. Trade Media Contact Jennifer Huang Marketing Communications Manager, Asia PolyOne Corporation +86 21 50802923 jennifer.huang@avient.com