DeLuca Vice President, Investor Relations PolyOne Corporation +1 440-930-1226 isaac.deluca@avient.com Rose Director, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com

The new ECCOH™ XL Cross-Linkable Solutions for photovoltaic cables are REACH compliant and rated for permanent outdoor use with good UV and weather resistance, passing Arrhenius lifetime prediction tests as per IEC 60216-1. They also have good electrical performance, are compatible with either DC or AC power supply, and pass flame retardant performance to EN 50618 and IEC 60332-1 standards.  

Rose Director, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com Trade Media Contact: Michelle Maniscalco Marketing Communications Manager, North America PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com

Attachment 1 Special items (1) 1)

September 1 November 1 1)

Attachment 1 Special items (1) 1)

Hohenrhein 1 No:6/1 No: 149/1

WHITE 660 AD-1 RED 1077 AD-1 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

X GT 41453-0002A-01-1 X 41839-01A-01-1 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

X GT-18029-1-6 MM498B-1 WHITE NP (New Pigment Disp) Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)