GenericCertificate_NewLayout Certificate TH04/3852 The management system of Avient (Thailand) Co., Ltd. 79 Moo 11, Soi Kingthong, Kingkaew Road, Rachatewa, Bangplee, Samutprakarn, 10540, Thailand This document is an authentic electronic certificate for Client’ business purposes use only. This document is copyright protected and any unauthorized alteration, forgery or falsification of the content or appearance of this document is unlawful.

Phil Clark is Senior Vice President, Chief Technology Officer at Avient Corporation, an innovator of materials solutions that help customers succeed while enabling a sustainable world. Clark joined Avient in 2024 from Nouryon, a global specialty chemicals organization where he served as Chief Technology Officer. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

JOHN MIDEA Senior Vice President, Global Operations and Process Improvement John Midea is Senior Vice President, Global Operations and Process Improvement at Avient Corporation, an innovator of materials solutions that help customers succeed while enabling a sustainable world. Midea joined Avient in February 2015 and leads the company’s award-winning global operational excellence initiatives, including manufacturing process improvement, environmental health and safety, global sourcing and logistics, Lean Six Sigma training and deployment, and acquisition integration. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

IRWIN Senior Vice President, New Business Development & Marketing Excellence Mike Irwin is Senior Vice President, New Business Development & Marketing Excellence at Avient Corporation, an innovator of materials solutions that help customers succeed while enabling a sustainable world. Irwin holds a Bachelor’s degree in Materials Science and Engineering from The Pennsylvania State University and an MBA from Arizona State University’s W.P. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com

Avient Resources Avient Resources These materials are lighter, have a longer lifespan, and facilitate the fast and efficient construction of structures.

Material management Raw materials used in Avient healthcare applications must fulfill a minimum set of requirements. Material management Raw materials used in food applications must fulfill a minimum set of regulatory requirements according to customer demands. At Avient, we create specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world.

FL.Datasheet PackingYarn.indd FIBER OPTICAL CABLES MOVING HIGH PERFORMANCE FIBERS FORWARD Key Features • Filament level coating produces longer lasting products • Dissipates heat and reduces shaft wear • Excellent sealing and lubricity properties • Twisted products available for added strength • Non-PFOA PTFE products available FIBER-LINE® FIBERS FOR PACKING YARN • Carbon Fiber • Kevlar® Para-Aramid • Nomex® Meta-Aramid • Graphite • Fiberglass • PTFE Fiber FIBER-LINE® PERFORMANCE ADDING COATINGS • FIBER-LINE® Packcoat™ PTFE • FIBER-LINE® Packcoat™ Silicone Oil • FIBER-LINE® Packcoat™ Graphite • FIBER-LINE® Packcoat™ Mineral Oil FIBER-LINE® PACKING YARN PRODUCTS • Braided compression packing • Packing rings • Packing materials for pumps and valves Overview • FIBER-LINE® offers a broad range of continuous filament yarn and performance additives for braided compression packing yarn. We believe that our ongoing commitment to protect the environment, to remain at the forefront of fiber and coating technology, and to ‘treat others as we want to be treated’ will continue to drive the success of our customers, shareholders, and employees.

Substance Safety Summary SUBSTANCE: Carbon Black GENERAL STATEMENT Carbon black (subtypes are acetylene black, channel black, furnace black, lamp black and thermal black) is a material produced by the incomplete combustion of heavy petroleum products such as FCC tar, coal tar, ethylene cracking tar, and a small amount from vegetable oil. Carbon black exposure to workers is controlled through engineering controls and personal protective equipment.

• FIBER-LINE® BondcoatTM products were created for applications where an untreated fiber does not have the ability to provide the appropriate amount of bonding characteristics to another material. We believe that our ongoing commitment to protect the environment, to remain at the forefront of fiber and coating technology, and to ‘treat others as we want to be treated’ will continue to drive the success of our customers, shareholders, and employees.

Products & Services and Markets Opportunities S M L Avient's role in producing innovative and low-emissions materials through light- weighting, creation of sustainable infrastructure, and advanced recycling technologies is instrumental in the global transition. In support of advancing the circular economy, our design expertise and material science, helps our customers reduce material usage, enable recyclability, increase recycle content, and improve physical performance. · Avient joined the Alliance to End Plastic Waste as a founding member and is collaborating with over 65 member companies to promote infrastructure, education and engagement, innovation, and clean up effrots to keep plastic waste in the right place. · By 2030, Avient will reduce Scope 1 & 2 GHG emissions by 60% with 2019 as a baseline and achieve operational carbon neutrality by 2050. · By 2030, Avient will reduce waste to landfill by 35% from the 2019 baseline. · In 2021, we were able to futher optimize the resource and energy consumption of our production through initiating 102 energy saving projects around the world. · Our decarbonization pathway is focused on reducing scope 2 emissions reductions for which a VPPA in Europe is planned to commence generation in 2023. We enable reduced carbon footprint technologies, improved recyclability, increased recycle content, and bio-derived solutions. · We partner with EcoVadis to evalute our prioritized suppliers on environmental, social, and governance requirements aligned with the UN Global Compact principles. · By 2030, to ensure alignment with Avient’s expectations on environmental, social and governance requirements, Avient will assess its top suppliers representing 90% of our total raw material costs. · Avient's sustainable solutions seek to solve our customer's complex sustainability challenges by reducing demand for raw materials and enabling the use of more recycled content, formulating with bio-polymers, and lightweighting materials. · Centralization of efforts will be beneficial in order to achieve ambitious net-zero aligned strategic milestones. · Talent development and retention in expertise areas of emerging technologies that can be deployed within our operations and support clean electrification and evaluation of resilient, diverse, and alternative energy generation models is ongoing. · We are a founding member of the Alliance to End Plastic Waste (AEPW).