High-efficiency engineered panel systems designed for optimal thermal enclosure in industrial developments.
Rajshahi, located along the northern banks of the Padma River, is transitioning rapidly from a traditional agricultural center into a dynamic hub for industrialization, agro-processing, and modern cold-chain logistics. Known as the premier region for mango, potato, and agricultural production in Bangladesh, the Rajshahi division faces distinct regional challenges. Seasonal temperatures regularly exceed 40°C during peak summer months, coupled with high humidity, putting immense pressure on agricultural storage facilities, food processing plants, and manufacturing units.
Traditional brick-and-mortar installations exhibit poor thermal resistance, resulting in severe heat ingress, compromised refrigeration performance, and excessive electricity costs. The local business community is recognizing that high-quality insulation is no longer an option, but an essential component of economic survival. Highly efficient Expanded Polystyrene (EPS) insulated panels provide an engineered thermal envelope, drastically reducing thermal conduction and energy loss, keeping processing facilities cool and cold storages operating at optimal coefficients of performance.
Aligning international engineering excellence with local regional requirements to deliver premium sandwich panels.
Globally, the construction industry is shifting rapidly toward prefabricated modular construction systems. This change is driven by the urgent need to lower carbon footprints, minimize onsite waste, and improve structural energy efficiency to meet global sustainability targets (such as LEED certifications). Expanded Polystyrene (EPS) insulated panels represent a leading solution in this movement due to their high strength-to-weight ratio, structural stability, and reliable thermal performance.
Ningbo Jonas Build Co., Ltd. serves as a key player in this global supply chain. We manufacture structural insulated panels (SIPs) that incorporate premium-grade, self-extinguishing EPS cores bonded with high-tensile color-coated steel sheets. Through precise thermal profiling and advanced manufacturing lines, our panels reduce the thermal bridging common in traditional construction, providing high performance for logistics centers, modern warehouses, and cleanrooms around the world.
Our solutions for the Rajshahi market are tailored to combat heavy monsoon rain loads and intense solar exposure. The tongue-and-groove joint profile of our panels creates a tight seal that prevents water ingress, maintains airtight environments, and stops humidity from penetrating the insulation core. By using our advanced structural panels, projects in Rajshahi can achieve structural reliability, thermal efficiency, and long-term durability equal to international standards.
| Performance Criteria | EPS Core (Expanded Polystyrene) | PU Core (Polyurethane) | PIR Core (Polyisocyanurate) | Rock Wool Core |
|---|---|---|---|---|
| Thermal Conductivity (W/m·K) | 0.033 – 0.038 (Excellent) | 0.020 – 0.024 (Superior) | 0.019 – 0.022 (Superior) | 0.038 – 0.044 (Good) |
| Fire Classification (EN 13501-1) | Class B1 / B2 (Self-Extinguishing) | Class B2 / B3 | Class B1-s1, d0 (High Fire Performance) | Class A1 / A2 (Non-Combustible) |
| Moisture Resistance | High (<2% absorption by volume) | Very High | Very High | Low (Requires vapor barriers) |
| Relative Cost Index | ★☆☆☆☆ (Most Cost-Effective) | ★★★☆☆ (Moderate-High) | ★★★★☆ (Premium) | ★★☆☆☆ (Moderate) |
Years Manufacturing Experience
Exporting Countries & Regions
SGS & ISO9001 Compliant
Energy Consumption Reduction
Customized structural configurations engineered to address the specific climatic and economic needs of the northern region.
Preserve local Rajshahi agricultural yields (mangoes, potatoes, and vegetables) with airtight, vapor-sealed cold storage enclosures. High-density EPS panels keep internal temperatures consistent and reduce the strain on cooling compressors.
Ideal for roof and wall systems on steel buildings across Rajshahi. The metal-faced panels reflect solar heat, keeping indoor working spaces comfortable, boosting employee productivity, and ensuring safe storage of goods.
Our panels feature smooth, non-porous surfaces that are easy to clean, making them ideal for pharmaceutical, biotechnology, and agricultural processing facilities that require strict hygiene and cleanroom conditions.
Ningbo Jonas Build Co., Ltd. uses modern production lines with continuous lamination systems to ensure uniform density and adhesion across every panel. We use high-quality raw materials, including high-tensile hot-dip galvanized steel skins and self-extinguishing, flame-retardant EPS beads. Each panel undergoes strict quality control checks to measure dimensional accuracy, density, flat tensile strength, and thermal resistance before shipment.
Our logistical systems are optimized for direct shipping from Ningbo to Bangladesh ports, with secure tracking to Rajshahi. We pack our panels in reinforced protective wrapping to prevent shipping and handling damage, ensuring every shipment arrives at your site ready for fast, hassle-free installation.
Explore our complete range of specialized structural panels designed for diverse commercial and industrial application requirements.
Ningbo Jonas Build Co., Ltd. operates modern facilities with advanced automation and precise quality control systems to ensure superior thermal performance.
Technical answers to common questions about selecting, importing, and installing EPS panels in Rajshahi.
For standard cold storage projects, we suggest a minimum thickness of 100mm to 150mm. If you require deep-freezing (-18°C or lower), 150mm to 200mm panels provide the necessary thermal boundary to prevent thermal ingress and minimize operational energy costs.
Our panels feature high-quality double-sided zinc-coated or color-coated steel sheets that resist rusting. The tongue-and-groove joints create a tight fit that keeps moisture out, preventing degradation and thermal bridging during the rainy season.
We use Class B1 or B2 fire-retardant EPS beads that comply with international standards (such as GB8624 or EN 13501-1). The panels are self-extinguishing, reducing fire propagation risk for added safety in commercial facilities.
Sea shipping from Ningbo to Chittagong or Mongla ports generally takes 15 to 22 days. Customs clearance and inland transport to your site in Rajshahi add about 7 to 10 days. Total turnaround time from order approval is typically 30 to 45 days.
Yes, we offer specialized joint profiles for walls (tongue-and-groove) and roofs (overlapping corrugated profiles). This allows you to construct a complete, insulated building envelope with consistent thermal protection.
Jonas Build
