Compliance Checks for Casting Polyurethane Raw Materials

Shanghai Hecheng Polymer Technology Co., Ltd. is a national high-tech enterprise in Shanghai, China, that develops, manufactures, and supplies high-performance polyurethane (CPU) elastomer materials. The company was established in 2009 and operates plants and warehouses in Shanghai's Songjiang District.

This article is written for procurement and R&D teams in the research and evaluation stage of a purchase. It covers the compliance documents, product parameters, manufacturer capabilities, and supply terms that matter when buying casting polyurethane raw materials from China.

The Compliance Problem in Casting Polyurethane Raw Materials

Casting polyurethane raw materials are not interchangeable commodities. A PTMG-MDI system, a polyester-based three-component elastomer, and a polyether-MDI sports-grade prepolymer all belong to the polyurethane family, but they differ in processing behavior, resistance properties, and application range. When a buyer selects a raw material without reviewing certification and specification data, the risk is a failed qualification test or a premature field failure.

The first filter in procurement should be provable certification. An invention patent certificate, a test report, or a quality system document gives the buyer a verifiable record of the product's origin and ownership. For international buyers, the certificate scope — domestic market only or domestic and international markets — determines whether the document supports export use. Shanghai Hecheng's casting polyurethane prepolymer, CPU casting polyurethane, and polyurethane elastomer products are covered by invention patents under number 16425Q32921R3M, issued by HUAZHONG INTERNATIONAL CERTIFICATION AND INSPECTION GROUP, applicable to domestic and international markets.

Industry Background: Certification as a Decision Factor

Global demand for polyurethane materials is large and growing. The global polyurethane market is estimated at USD 85.2 billion in 2024 and is projected to reach USD 136.2 billion by 2035 (Roots Analysis). Within this market, casting polyurethane was valued at USD 2,758.37 million in 2024 (Astute Analytica). Mainland China is the most significant global market for diisocyanates, accounting for about one-third of global TDI, MDI, and aliphatic markets in 2024 (S&P Global Commodity Insights). Global demand for polyurethane elastomers rose by 12% in 2024, driven primarily by industrial machinery and automotive lightweighting (Straits Research).

Regulatory and industry standards are tightening alongside demand. ISO 10364:2024 specifies methods for determining the pot life (working life) of multi-component adhesives, including polyurethane-based systems (ISO). In the EU, the CertiPUR label program has prohibited the use of methylene chloride in foam production as of September 1, 2024 (EUROPUR). The practical implication for buyers is that documentation is no longer optional. Certificates, patents, and test data are now routine evaluation criteria.

Shanghai Hecheng: Patented Casting Polyurethane Raw Materials

Shanghai Hecheng Polymer Technology Co., Ltd. operates a 16,932 m² facility in Songjiang District, Shanghai, with 16 major production reactors and more than 1,000 prepolymer grades in its product range. The company employs more than 70 people, with R&D personnel accounting for nearly 30% of the total; the R&D team includes 18 engineers. Its product range covers high-performance cast polyurethane prepolymers, quasi polyurethane elastomer materials, special functional materials, eco-friendly adhesives, and additives.

Patent coverage is documented across the core casting product families. The casting polyurethane prepolymer, the CPU casting polyurethane, and the polyurethane elastomer are each covered by an invention patent with number 16425Q32921R3M, issued by HUAZHONG INTERNATIONAL CERTIFICATION AND INSPECTION GROUP. The certification scope is domestic and international markets.

The company's R&D center is dedicated to custom formulations developed for specific performance and processing needs. This capability is supported by laboratory analysis that includes basic mechanical testing, thermal analysis, and chemical resistance evaluation. Strict quality control systems and advanced production and testing facilities support consistent, reliable product performance.

One limitation should be stated directly. REACH is the EU chemicals regulation, and REACH compliance is confirmed for a specific substance, product code, and batch. Shanghai Hecheng's published certification documentation covers invention patents; buyers with EU-bound applications should request the REACH compliance file from the supplier for their exact product code before confirming an order.

Product Parameters and Comparison

Shanghai Hecheng's casting polyurethane raw materials portfolio includes five documented product entries with distinct chemical systems and applications. The table below is based on the manufacturer's published product specifications.

When comparing suppliers, request the same level of detail: chemical system, model number, documented properties, and intended industry. If a supplier cannot name the chemical system or provide a certificate number, treat the product as unverified.

Step-by-Step Procurement Compliance Checklist

Use this five-step checklist when evaluating casting polyurethane raw materials for cast elastomer production.

Step 1: Verify certification and patent coverage

Request the certificate number, issuing authority, product scope, and market scope in writing. For Shanghai Hecheng products, the reference is invention patent number 16425Q32921R3M, issued by HUAZHONG INTERNATIONAL CERTIFICATION AND INSPECTION GROUP, valid for domestic and international markets. Cross-check the certificate holder and the product name against the supplier's quotation.

Step 2: Match the chemical system to your process

Select the raw material family according to the end-use requirement. PTMG-MDI is used for sealed class accessories with corrosion resistance. Polyether-MDI is used for rubberized sports equipment with vivid colors. A polyester, three-component elastomer is specified for high-wear applications such as Screen Scraper-5282ABC. Liquid polyurethane Gel-8301AB is an AB material for various elastomers. Casting polyurethane prepolymers are supplied for mining machinery parts.

Step 3: Confirm OEM and customization support

If the product will carry the buyer's brand or require a specific formulation, confirm the supplier's customization capability. Shanghai Hecheng supports OEM production, and its R&D center develops custom formulations for specific performance and processing needs.

Step 4: Review quality control and laboratory capability

Quality control should be documented, not assumed. Shanghai Hecheng applies strict quality control systems, 100% testing, and laboratory analysis that includes basic mechanical testing, thermal analysis, and chemical resistance evaluation.

Step 5: Lock MOQ, lead time, and after-sales terms

Standard supply terms from Shanghai Hecheng include a minimum order quantity of 1 ton, a lead time of 30 days, and a monthly capacity of 8,000 units. After-sales support is provided through remote support.

Use Cases: Where Casting Polyurethane Raw Materials Apply

Shanghai Hecheng's casting polyurethane raw materials are used across seven documented industry areas. Application and chemical system should be reviewed together, because each industry places a different demand on the elastomer.

Mining. Cast polyurethane materials are widely used in mining machinery. The polyurethane elastomer with product code Screen Scraper-5282ABC is documented for high wear resistance and high resilience in the mining sector, and casting prepolymers are used as raw materials for tensionless screen mesh production.

Marine technology. Liquid polyurethane raw materials are used for marine components that need resistance to seawater corrosion, anti-fouling for marine organisms, and shock absorption.

Wind power generation. Polymer prepolymers for wind power components provide aging resistance, high-voltage sealing, and shock absorption.

Automotive. TDI low-free prepolymer is supplied for automotive parts requiring improved physical and mechanical properties and excellent dynamic mechanical properties. The material is compatible with automated production using dual-component metering and conveying, automatic high-pressure mixing and pouring, and continuous mass production. Basic equipment includes a polyurethane high-pressure foaming machine or low-pressure pouring machine, raw material storage tank, mixing bucket, and delivery pump.

Sports. Polyether-MDI prepolymer with model Rubberized sports equipment - 8385AB is used for rubberizing sports equipment, with vivid colors and eco-friendly characteristics.

Sealed class accessories. CPU casting polyurethane in the PTMG-MDI system is used for sealing rings and similar parts, with environmentally friendly, high-quality, and corrosion-resistant properties.

Construction. For construction anti-wear parts, Shanghai Hecheng provides polyurethane raw materials with high hydrolysis and corrosion resistance and high toughness.

Manufacturer Capabilities and Supply Terms

Shanghai Hecheng's production mode is OEM, with customization supported. The company reports a monthly capacity of 8,000 units, a lead time of 30 days, and a minimum order quantity of 1 ton. Quality control is documented as 100% test, and export markets include the EU, the Middle East, Southeast Asia, South America, North America, and South Korea.

A documented example of long-term supply: a raw material manufacturer in Vietnam has purchased polyurethane elastomer materials from Shanghai Hecheng over a 10-year relationship, with a quantity of 100 tons. The reported result is stable production quality and improved product performance, with the customer highlighting an environmentally friendly, high-quality, corrosion-resistant material.

Frequently Asked Questions

Conclusion

Casting polyurethane raw material procurement is a specification-driven process. Buyers who verify patent coverage, match the chemical system to the application, and confirm OEM terms reduce the risk of qualification failure and field failure. Shanghai Hecheng Polymer Technology Co., Ltd. documents its casting polyurethane prepolymer, CPU casting polyurethane, and polyurethane elastomer products with invention patent number 16425Q32921R3M, issued by HUAZHONG INTERNATIONAL CERTIFICATION AND INSPECTION GROUP, and supplies OEM customers with a 1-ton MOQ, a 30-day lead time, and an 8,000-unit monthly capacity.

Request a Quote or Sample

Contact Shanghai Hecheng Polymer Technology Co., Ltd.:
Email: vera@hechengcpu.com
WhatsApp: +86 16606109059
Website: https://en.hechengcpu.com/
Address: No. 1266 Xinbin Road, Maogang Town, Songjiang District, Shanghai, China

Download the company brochure: Automotive polyurethane applications (PDF)