Seller warrants good and clear title in goods subject to the sale (“Product”) and that the Product conforms at the time of shipment to a Certificate of Analysis, a Certificate of Compliance, or a Product Specification Sheet, if any such document exists, and other specifications signed by Seller (“Specifications”).

Seller warrants good and clear title in goods subject to the sale (“Product”) and that the Product conforms at the time of shipment to a Certificate of Analysis, a Certificate of Compliance, or a Product Specification Sheet, if any such document exists, and other specifications signed by Seller (“Specifications”).

Activities beyond these standards include environmental impact assessments, enterprise risk assessments, product carbon footprinting, ISO 14001 & ISO 50001 certifications at selected sites, and risk identification in product and process safety. We have received third party certification from TÜV Rheinland. We have received third party certification from TÜV Rheinland.

P O L Y O N E C O R P O R A T I O N Exhibit 31.1 CERTIFICATION I, Stephen D. P O L Y O N E C O R P O R A T I O N Exhibit 32.2 CERTIFICATION PURSUANT TO 18 U.S.C. ANNUAL CERTIFICATIONS PolyOne Corporation included as Exhibits 31.1 and 31.2 to its Annual Report on Form 10-K for 2011, filed with the Securities and Exchange Commission, certificates of its Chief Executive Officer and Chief Financial Officer certifying the quality of PolyOne’s public disclosure.

We hold the American Chemistry Council's certification as a Responsible Care Management System® (RCMS) company. s/ Ernst & Young LLP Cleveland, Ohio February 22, 2023 Exhibit 31.1 CERTIFICATION I, Robert M. AVIENT CORPORATION Exhibit 32.2 CERTIFICATION PURSUANT TO 18 U.S.C.

Further, we recently achieved the American Chemistry Council's certification as a Responsible Care Management System® (RCMS) company. Wulfsohn POLYONE CORPORATION68 Exhibit 31.1 CERTIFICATION I, Robert M. POLYONE CORPORATION Exhibit 32.2 CERTIFICATION PURSUANT TO 18 U.S.C.

Seller warrants good and clear title in goods subject to the sale (“Product”) and that the Product con- forms at the time of shipment to a Certificate of Analysis, a Cer- tificate of Compliance, or a Product Specification Sheet, if any such document exists, and other specifications signed by Seller (“Specifications”). Säljaren garanterar att de produkter som är föremål för försäljningen (”Produkten”) är fria från rättsliga fel och att Produkten vid leveranstidpunkten stämmer överens med ett så kallat ”Certificate of Analysis”, ett ”Certificate of Compliance” eller ett ”Product Specification Sheet”, om något sådant existerar, och med andra specifikationer undertecknade av Säljaren (”Specifikationer”).

They are formulated with  raw materials that are pre-tested to ISO, USP, EP and ICH Q3D protocols to mitigate the risk of product non-compliance of healthcare products.

For our sensitive applications, we have implemented ISO 13485 and Good Manufacturing Processes (GMP). 100% of our facilities producing those sensitive applications and warehouses are GMP audited within a 3–year period. In addition to our certification as an ACC Responsible Care® company, PolyOne has over 140 third-party certifications across multiple areas of expertise. Our third-party certifications span Quality, Environmental, Health & Safety, Automotive Quality, Laboratory Testing and Food Safety.

Stringers Bulkheads, Decking and Transoms Doors and Cabinetry Ceilings and Hatches MECHANICAL PERFORMANCE Superior strength-to-weight ratio PROPERTY TEST METHOD PANEL THICKNESS .50" .75" 1.00" 1.50" Core Density (lb/ft3) ISO 845 5.3 8.4 5.3 8.4 5.3 8.4 5.3 8.4 Flexural Rigidity (lb-in2) ASTM D7249 38,379 39,390 80,699 74,158 147,890 140,081 342,866 363,009 Panel Weight (lb/ft2) Calculated 0.93 1.07 1.03 1.25 1.14 1.42 1.35 1.77 Core Shear Yield (psi) ASTM C393 60 138 61 139 57 131 52 99 Max Load (lbs) ASTM C393 246 482 362 704 423 833 558 1,031 Core Shear ULT (psi) ASTM C393 81 159 81 153 70 138 62 113 Face Bend Stress (psi) ASTM C393 6,430 12,582 6,355 12,109 5,511 10,860 4,899 8,916 USES & APPLICATIONS SUPPORT SPAN DEFLECTION Meets performance required for marine applications Predictive deflection in various load cases.