Avient Resources Avient Resources Find out how Avient helped L'Oréal achieve color consistency across their global PCR packaging with the PCR Color Prediction Service.

ABS Quality Evaluations This is to certify that the Quality Management System of: Avient de México, S.A. de C.V. IATF 16949:2016 Certificate Of Conformance ANNEX At Below Facilities: Validity of this certificate may be confirmed at www.abs-qe.com/cert_validation. Facility: Avient Corporation 80 North West Street Norwalk, OH 44857 U.S.A.

Avient’s chief operating decision maker uses these financial measures to monitor and evaluate the ongoing performance of Avient and each business segment and to allocate resources. Each of such adjustments has not yet occurred, are out of Avient’s control and/or cannot be reasonably predicted. Senior management believes the measures described above are useful to investors because they allow for comparison to Avient's performance in prior periods without the effect of items that, by their nature, tend to obscure Avient's operating results due to the potential variability across periods based on timing, frequency and magnitude.

Wulfsohn      POLYONE CORPORATION68 Exhibit 31.1 CERTIFICATION I, Robert M. Richardson   POLYONE CORPORATION Exhibit 32.1 CERTIFICATION PURSUANT TO 18 U.S.C. POLYONE CORPORATION Exhibit 32.2 CERTIFICATION PURSUANT TO 18 U.S.C.

In addition, he serves as the primary point of contact for Avient’s shareholders. He joined Avient in 2011 as Assistant Controller and later served as Director, Finance for the company’s Global Color, Additives & Inks business segment. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

We’re extremely proud to have reached this milestone,” says Marcelo van de Kamp, Global Business Director for Dyneema® at Avient. About Avient  To access Avient’s news library online, please visitwww.avient.com/news.  

主な特徴 ISO 13485の管理基準化で製造。 規制対応 評価試験*: - ISO 10993-1 - USP および (Class VI) - 欧州薬局方 モノグラフ 3.1.3/ 3.1.5 (ポリオ レフィン系包装材料) - USP (ポリエチレン) - ICH Q3Dに準拠した元素不純物分析 DMF（Type III）および Device Master File 登 録済み 米国FDAおよびEUの食品接触規格 軽量化 ヘルスケア用途に制限ありー下記参照詳しくはAvientにお問い合わせください。 a) 米国食品医薬品局（FDA）または国際標準化機構（ISO）により「インプラント」機器として分類される医療機器、または米国薬局方（USP）または ISO 規格で定義される「パーマネント」 機器、または (b)EU指令90/385/EECの改正で定義された能動埋込型医療機器、または (c)EU指令93/42/EECの改正で定義された「長期」使用のための医療機器。

Avient Attains ACC Responsible Care® 14001 Global Certification for Environmental, Health, Safety, and Security Excellence Halal Certification Expands for Avient’s Colorants and Additives Produced at Indonesia Site Avient Obtains Halal Certification Expansion to Include its Colorants and Additives Produced at the Tangerang, Indonesia Facility.

Abbiamo creato un’azienda con un grande slancio: un’azienda di portata globale e con una visione chiara. Fare riferimento alla Politica globale anti-concussione e anti-corruzione di Avient e alla Politica su regali e intrattenimento disponibile su The Loop – Persone e dipartimenti – Etica e politiche aziendali. Se conducete affari in altri Paesi o con persone di altri Paesi, o viaggiate a livello internazionale, dovete rispettare le leggi in vigore e consultare l’Ufficio Legale o il dipartimento Global Trade Compliance di Avient per avere indicazioni in merito.

Certification instructions. No. 10231X Form W-9 (Rev. 10-2018) AVIENT CORPORATION AVIENT COLORANTS USA LLC ✔ 5 E 33587 WALKER ROAD AVON LAKE, OH 44012 3 4 1 7 3 0 4 8 8 1/15/2021 Form W-9 (Rev. 10-2018) Page 2 By signing the filled-out form, you: 1. You must sign the certification.