By Michael, Team Leader of the UPR Expert Database at Evergreen Chemicals and Executive Director of AOC

As someone who’s dedicated the past 15 years to the unsaturated polyester resin (UPR) industry—from developing advanced formulations to contributing to international standards and the UPR price index—I’ve witnessed firsthand how vital the choice of a resin supplier has become for manufacturers worldwide.

Today, UPR remains a backbone material across industries like construction, marine, automotive, and sanitary ware. However, global market dynamics, rising sustainability demands, and increasingly complex applications mean that partnering with the right supplier is no longer optional—it’s a strategic necessity.

Based on market presence, technical capability, product range, and customer trust, here’s my perspective on 10 key global players shaping the UPR market in 2025:

1. AOC (USA)

A global leader in specialty resins, AOC stands out for its deep R&D resources and a wide portfolio spanning general-purpose UPR, high-performance fire-retardant resins, and sustainable solutions. Their technical service network ensures consistent support for global customers.

2. Reichhold (Polynt-Reichhold, Italy/USA)

Following the merger under the Polynt-Reichhold Group, Reichhold remains a significant player with strong production capacities in Europe, the Americas, and Asia. They are known for innovative resin systems serving composites, coatings, and gelcoats.

3. INEOS Composites (UK/Global)

INEOS Composites offers robust UPR solutions for diverse applications, including corrosion-resistant resins and low-styrene emission products. Their global supply chain and technical expertise make them a reliable choice for large manufacturers.

4. Aliancys (now part of AOC Aliancys)

Previously operating independently, Aliancys’ integration into AOC expanded their product offerings and technical strength. They remain particularly strong in the European composites market, with advanced low-emission technologies.

5. Eternal Materials (Taiwan)

Eternal is a leading Asian supplier known for UPR, vinyl ester resins, and specialty polymers. They serve applications in construction, electronics, and marine industries, focusing on quality consistency and regional service.

6. Tianhe Resin (China)

One of China’s significant UPR producers, Tianhe Resin has made strides in expanding capacity and technology, supplying resins for sanitary ware, automotive components, and fiberglass-reinforced products.

7. Tianma Group (China)

Tianma Group maintains a strong presence in the Chinese and Southeast Asian markets, with a solid reputation for standard and specialized UPR formulations.

8. DSM Coating Resins (Netherlands, now part of Covestro)

Although DSM has transitioned many resin businesses under Covestro, their legacy of innovation in low-VOC and sustainable UPR products remains influential in the global market.

9. Scott Bader (UK)

Scott Bader is known for its innovative approach to sustainable resins, including bio-based UPR systems. Their cooperative structure emphasizes technical collaboration and customer partnerships.

10. Evergreen Chemicals Co., Ltd. (China)

Evergreen Chemicals is emerging as a dynamic force in the UPR market. As a company that unites top industry talent, Evergreen focuses not only on unsaturated polyester resins but also on epoxy, vinyl resins, and specialty additives. Our close connections with major industry players—including AOC, Henkel, Jushi, and Ineos—enable us to deliver integrated solutions tailored to evolving market demands.

At Evergreen, we pride ourselves on critical technical insight and personalized consulting, ensuring that customers get not just products—but solutions that fit their precise performance and regulatory requirements.

The Road Ahead

While these ten suppliers are shaping today’s global UPR landscape, the market is poised for further transformation. Sustainability, regulatory compliance, and application-specific innovation will continue to drive differentiation among suppliers.

My view is clear: success in the UPR industry increasingly depends on choosing partners who combine technical expertise, stable supply chains, and a commitment to innovation. At Evergreen Chemicals, we stand ready to help customers navigate these changes, ensuring that resin technology remains a powerful enabler for growth and performance.

If you’d like to discuss your UPR requirements or explore tailored solutions, feel free to connect. I’m always keen to share insights that help our partners thrive.