On March 30, 2025, NHU announced on its interactive platform that the company's Isophorone Diisocyanate (IPDI) project, with an approved production capacity of 21,000 tons, has been put into operation in phases. The first phase of the project is now operational.

NHU's 21,000-Ton IPDI Project

It is reported that NHU's 21,000-ton Isophorone Diisocyanate (IPDI) capacity plan falls under the "New Energy Materials and Environmental Protection New Materials Project" (referred to as the "HA Project").

The project covers a total area of 30,814㎡ with a total building area of 74,118㎡. Leveraging existing facilities such as the circulating water station, liquid chlorine storage, and vaporization workshop, the project includes the construction of new tank areas, hazardous waste warehouses, and production workshops. Upon completion, the project will achieve an annual production capacity of:

• 103,000 tons of Hexamethylene Diisocyanate (HDI)
• 21,000 tons of Isophorone Diisocyanate (IPDI)
• 20,000 tons of Biuret (converted to pure form)
• 83,000 tons of HDI Trimer (converted to pure form)
• 40,000 tons of Isophorone Diamine (IPDA)
• By-products: 100,000 tons of Hydrogen Chloride (converted to pure form) and 6,400 tons of Ammonium Sulfate

The project is being constructed in phases. The first phase includes the establishment of IPDA production facilities, HDI and IPDI production units, Biuret production units, and Trimer production units. It also relies on common facilities such as phosgene synthesis units, CO purification units, and environmental protection facilities like RTO and waste gas incinerators. The first phase has an annual production capacity of:

• 20,000 tons of IPDA
• 3,000 tons of HDI
• 1,000 tons of IPDI
• 1,000 tons of Biuret (converted to pure form)
• 2,000 tons of Trimer (converted to pure form)

According to NHU's investor activity report released in March 2025, products such as HDI, ADI, and IPDA in the "New Energy Materials and Environmental Protection New Materials Project" have already been put into production, including:

• IPDA: 20,000 tons/year
• ADI: 4,000 tons/year
• HDI: 3,000 tons/year

Throughout 2024, the company focused on customer sampling and market expansion. Initial feedback from downstream customers has been positive. Large-scale production is still in the preparation stage, and approval procedures have been completed. The company will commence production based on market conditions.

About NHU's IPDI Product

IPDI: The "Golden Key" of High-End Polyurethane Materials

As a benchmark product in the alicyclic diisocyanate family, IPDI (Isophorone Diisocyanate) has become a "golden raw material" for high-end coatings, elastomers, and adhesives due to its controllable reactivity, excellent weather resistance, and eco-friendly properties. NHU enhances IPDI's performance and expands its application scenarios through full industrial chain vertical integration (IP-IPN-IPDA-IPDI) and internationally advanced technology.

Advanced Technology Sets a Quality Benchmark

• Lean Manufacturing: Adopting the phosgenation process, ensuring industry-leading batch stability with a product purity of 99.5%. It meets stringent requirements in areas such as automotive OEM coatings and electronic encapsulation.
• Green Closed-Loop Production: Fully enclosed production with VOC emissions well below EU standards, helping customers achieve environmental compliance and low-carbon transformation.
• Global Certification: Certified under ISO 9001 and ISO 14001, with each batch accompanied by a full test report (TDS/COA), ensuring traceability and customer trust.

Strong Global Supply Chain Response

• Autonomous Vertical Industrial Chain: Full-chain layout from upstream raw materials to end products, optimizing costs and ensuring stable quality.
• Coordinated Global Warehousing: Collaboration between production bases in China and warehousing centers in Germany reduces delivery lead time by 30%, adapting flexibly to regional procurement trends and providing localized service.
• 48-Hour Emergency Response: Partnering with global logistics giants to establish a secure inventory system, ensuring supply chain stability and meeting urgent customer demands.

Technology-Driven and Customization-Oriented Services

• Solving Industry Challenges: Expert teams provide formulation optimization and process adaptation services to address polyurethane yellowing, poor weather resistance, and other industry issues, surpassing traditional materials in performance.
• Joint R&D: Open laboratory resources for collaborative development with customers in cutting-edge applications such as waterborne polyurethane and UV-curable coatings, driving industry technological advancements.

IPDI's "Cross-Industry" Applications: From Automotive to Aerospace

With high adaptability and superior performance, NHU's IPDI drives multiple industries towards high-end and eco-friendly transformations:

• Automotive Manufacturing: IPDI-based polyurethane coatings offer over 10 years of weather resistance, widely used in OEM coatings and interior adhesives, helping automakers achieve premium quality.
• Construction & Electronics: Its hydrolysis resistance and UV aging resistance make it the preferred material for curtain wall sealing and electronic encapsulation.
• Aerospace: With low vapor pressure and high stability, it meets stringent requirements for rocket propellant adhesives and high-temperature insulation materials.
• Medical & Environmental Applications: Its green production process ensures higher safety than traditional aromatic diisocyanates, making it suitable for medical devices, waterborne leather, and other eco-friendly upgrades.