Founded in 1998 and headquartered in Yantai, Wanhua Chemical Group is a globally operated chemical-new-materials manufacturer built around proprietary technology and large-scale production. Its business spans polyurethane, petrochemicals, performance chemicals and emerging materials, supported by 14 production sites and factories and seven research centers across China and Europe. Wanhua is particularly distinguished by its integrated development of polyurethane and MDI technologies, while its newer Nylon 12 chain earned a 2025 Shandong Provincial First Prize for Technological Invention.
EcoVadis Gold Medal
Huntsman CorporationHuntsman Corporation is a publicly traded global manufacturer and marketer of differentiated and specialty chemicals, with products sold worldwide to manufacturers serving consumer and industrial markets. The company reports operating more than 55 manufacturing, R&D and operations facilities in approximately 25 countries, with about 6,000 associates in its continuing operations. Its businesses include Advanced Materials, Performance Products and Polyurethanes.AKRON, OH
Hennecke GmbHSince its founding in 1945, Hennecke GmbH has built its identity around polyurethane innovation, introducing the first high-pressure metering system for polyol and isocyanate shortly after the company began. Now based in Sankt Augustin, Germany, Hennecke employs 650 people across eight locations and develops industrial production technology for polyurethane processors worldwide. Its TECHCENTER gives customers a place to turn new application ideas into series-ready production.KREUZTAL, DE
PolyntPolynt is an international chemical manufacturer with more than 70 years of history, producing and selling organic anhydrides and their derivatives and developing chemical materials for industrial applications. Its integrated business model spans production, research and development, and technical assistance, with 35 plants across Europe, Asia, and the Americas.SANDUSKY, OH
STOCKMEIER UrethanesSince 1991, STOCKMEIER Urethanes has built its identity as a global polyurethane systems house serving industrial, sports, and leisure applications. From five production sites in Europe, the United States, and the UAE, the company develops tailored formulations and supports customers with application-focused technical expertise. Its manufacturing network is ISO 9001 certified, with ISO 14001 certification across its European sites and ISO 9001, ISO 14001, and ISO 45001 certification at its Dubai facility.CLARKSBURG, WV