Explore our elite range of structural insulation materials and decorative claddings engineered to meet rigorous international standards.
Deep engineering insights into thermal metrics, load structures, and chemical formulation of outdoor sandwich panel cores.
Modern architectural engineering demands envelope materials that do more than separate interior and exterior environments. Outdoor sandwich panels represent a highly optimized composite structure. By bonding high-density structural skins (galvanized steel, aluminum, or fiber-reinforced composites) to a thick cores of high-performance thermal insulation (Polyurethane PUR, Polyisocyanurate PIR, or Mineral Rockwool), we achieve structural integrity paired with unparalleled thermal resistance.
Understanding the thermodynamics of composite building envelopes requires examining the Thermal Conductivity (λ-value) of the cores. Rigid Polyisocyanurate (PIR) cores offer the lowest thermal conductivity in commercial building materials, down to 0.020 W/m·K. This allows architects to specify thinner panel walls while satisfying high R-value mandates, maximizing usable internal floor area without sacrificing energy efficiency.
| Panel Parameter | Polyurethane (PUR) Core | Polyisocyanurate (PIR) Core | Rockwool Core |
|---|---|---|---|
| Thermal Conductivity (λ) | 0.022 W/m·K | 0.020 W/m·K | 0.038 W/m·K |
| Density Profile | 38 - 42 kg/m³ | 40 - 45 kg/m³ | 100 - 120 kg/m³ |
| Fire Safety Class (EN 13501-1) | Class B-s2, d0 | Class B-s1, d0 | Class A1 (Non-Combustible) |
| Water Absorption | ≤ 1.5% | ≤ 1.0% | ≥ 10% (requires vapor barriers) |
| Optimal Use Case | General Cold Storage & Warehousing | High-Performance Envelope & Green Building | High Fire Risk Partition & Acoustic Cladding |
Custom high-performance configurations built for complex, heavy-duty industrial and commercial architectural applications.
Bridging the gap between raw manufacturing capacities and stringent Western compliance standards through state-of-the-art automation.
To supply high-performance products at scale, our supply chain operates under the principles of Industry 4.0. Automated continuous sandwich panel production lines ensure uniform density distribution of the PU/PIR core material, eliminating voids that compromise thermal efficiency. Advanced computer-controlled systems continuously monitor temperature, pressure, and curing speeds during double-belt foaming processes, guaranteeing that structural sandwich panels exhibit stable physical properties.
With deep supply chain roots stretching over 25 years and partnerships in more than 20 cities in China, we manage production schedules with precision. We coordinate closely with raw material suppliers to buffer against market volatility. From light steel keel components and fireproof gypsum boards to WPC outdoor grilles, we secure high-grade inputs to maintain a 0% default rate on global deliveries.
Years Industry Experience
Global Customers Served
Supply Chain Network Cities
Order Default Rate
The Name "Haofa" Means a Wide World with Great Potential - Upholding the Principle of "Once a Deal, Lifelong Friends".
Tangshan Haofa International Trade Co., Ltd. is an emerging trading company integrating industrial decorative building materials wholesale with customized design solutions. Over 25 years, we have built a diverse portfolio covering wall systems, ceiling systems, and flooring solutions.
Led by founder Ms. Zhang Xuedong, our team coordinates operations, purchasing, and logistics. Our export professionals average more than 10 years of experience, ensuring clear and efficient communication for our international clients.
"Based on quality, won by innovation, guaranteed by service." We empower our team members to manage projects independently while maintaining strict corporate accountability, helping us deliver reliable results across the globe.
Our building materials have passed international certifications including CE, ASTM, RoHS and EN standards, as well as national & international environmental certifications, plus fireproof and moisture-proof industry certifications.
Adapting to carbon-neutral construction policies through innovative material formulations and automated processes.
We are actively exploring raw materials containing bio-based polyols derived from agricultural waste, reducing the carbon footprint of our polyurethane core foams by up to 25% while maintaining the panel's low thermal conductivity.
In response to changing global environmental and health regulations, our R&D roadmap focuses on halogen-free flame retardants. These additives maintain fire-retardant performance under extreme temperatures while reducing smoke toxicity and density, helping projects meet evolving fire safety guidelines.
We are developing prototypes of sandwich panels with embedded, non-destructive moisture and heat sensors. These sensors collect real-time data from the building envelope, helping facility managers locate moisture issues or thermal failures before they require major repairs.
Six fundamental strengths that make us a trusted partner for global developers, contractors, and building material distributors.
🔹 0% Order Default Rate
🔹 Customer Interests Priority. We ensure every transaction is protected, establishing long-term business partnerships.
🔹 Certifications: CE, ASTM, EN, RoHS
🔹 Fire Resistance & Sound Insulation Meet EU/US/Southeast Asia Standards.
🔹 Own Factory & Long-Term Cooperative Logistics Providers
🔹 Stable Supply Chain & One-Stop Solution For All Your Construction Needs.
🔹 Customized product solutions tailored to specific architectural drawings
🔹 Neutral Packaging Or Customer Brand Customization.
🔹 Flexible Trade Terms: FOB, CIF, EXW, DDP
🔹 Professional Team: Customs Declaration, Sea Transportation, Documentation.
🔹 7x24 Hour Instant Communication channels
🔹 Multi-Language Services for accurate technical coordination.
Designed for commercial, public, industrial, and residential applications around the world.
Ensuring products meet localized building regulations and site-delivery parameters.
International building codes require envelope claddings to pass specific structural load and safety tests. We design our products to meet standard requirements like ASTM E84 Class A for flame spread and smoke indices, and European EN 13501-1 Class B-s1, d0 for smoke generation and burning droplets. Our engineering team assists with calculations and structural data sheets for local code approvals.
To reduce shipping costs and speed up on-site installation, we offer customized panel lengths matching standard 20GP and 40HQ container limits, minimizing waste and helping local crews complete projects efficiently.
US, CA, HT, BR, CL, CO, PE, GB, FR, ES, NL, DE, CD, GH, TZ, CI, MY, SA, OM, AE, IN, PK, SG, PH, JP, VN, ID, AU, NZ
Technical answers to help engineers, purchasers, and developers select the right products.
Complete structural profiles and interior components for modern commercial developments.
Haofa