Polyurethane sandwich panel supplier

The certifications held by a sandwich panel manufacturer serve as a key indicator of product quality, regulatory compliance, and corporate capability. Requirements vary depending on the application scenario, but the essential certifications generally fall into three categories: foundational management system certifications, product-specific certifications, and international export certifications.   Foundational management system certifications form the basis of compliant operations. Key certifications include ISO 9001 (Quality Management System), ISO 14001 (Environmental Management System), and ISO 45001 (Occupational Health and Safety Management System). These three certifications cover the control of the entire production process—ensuring consistent product quality and environmentally safe production—and serve as a basic threshold for domestic project procurement; without them, it is difficult for a company to guarantee product consistency.   Product-specific certifications are crucial for ensuring sandwich panels meet project requirements. Fire safety certification is paramount; products must comply with the GB 8624 standard and possess corresponding fire-rating test reports. For Class A non-combustible panels, additional fire-resistance limit test reports are required—a mandatory stipulation for commercial projects and industrial facilities. Next is Green Building Material certification; certified products receive priority in government-funded engineering works and green building projects, aligning with current policies on building energy efficiency. Additionally, for specialized environments such as clean rooms and cold storage facilities, specific certifications regarding cleanliness levels and thermal insulation performance are required.   International export certifications are essential for expanding into overseas markets. Exports to the EU require CE certification based on the EN 14509 standard, covering comprehensive requirements for product performance and safety. Exports to the US and similar regions may benefit from FM certification to enhance product recognition, while exports to Australia require AS1530 and Code Mark certifications. Certain regions also mandate compliance with local standards—such as Russia's GOST certification—to ensure smooth customs clearance and adherence to local engineering requirements.   In summary, a high-quality sandwich panel manufacturer must hold foundational system certifications, product-specific certifications, and relevant international certifications. When procuring materials, it is essential to verify the authenticity and validity of these certificates to prevent project acceptance issues caused by incomplete qualifications.  

Poultry are highly sensitive to temperature; large temperature differences can easily lead to illness and loss of appetite, directly impacting farming profits. Therefore, maintaining a stable temperature in poultry houses is crucial for successful poultry farming. Many farms now use sandwich panels to construct walls and roofs, easily achieving a constant temperature inside the house.   Sandwich panels have a three-layer composite structure: two metal protective panels on each side, and an insulating core in the middle. The middle zinc insulating layer has a very low thermal conductivity, providing excellent insulation. In summer, it blocks outside heat from entering the house, slowing down rapid temperature increases; in winter, it locks in the heat from the house's heating system and the poultry's own heat, preventing cold air from entering and significantly reducing the temperature difference between day and night. Compared to corrugated iron sheds and ordinary brick walls, sandwich panels offer better insulation, preventing stuffy days and cold nights.   The inner lining of the sandwich panels can be changed to suit different farming environments. For example, aluminum foil lining can be used for the roof of higher areas of the poultry house to prevent moisture and reduce condensation. For walls near the ground that are easily splashed with manure and wastewater, cement mortar cloth lining can be used, which is resistant to ammonia and manure corrosion and is not easily damaged by long-term washing. The thickness of the sandwich panels can be selected from 30mm to 50mm; the thicker the panel, the better the insulation effect. Farmers can choose the appropriate thickness based on the local climate and the required insulation level.   During installation, the sandwich panels are tightly joined, and the seams are sealed with sealant to prevent cold air from entering the poultry house and to prevent heat loss. Once the temperature stabilizes, frequent turning of heating or cooling equipment is unnecessary, saving considerable electricity costs. Poultry in a comfortable, constant-temperature environment are less likely to experience stress due to temperature fluctuations, resulting in more regular eating habits, faster growth, and a significantly lower probability of disease.   In summary, sandwich panels are easy to assemble, heat-insulating, durable, and cost-effective. Different thicknesses of sandwich panels can be selected according to different temperature requirements. They can maintain a stable temperature in poultry houses for a long time and improve the growth environment of poultry. They are a practical and cost-effective building material for modern poultry farms.  

Walk-in Freezer primarily uses PU/PIR sandwich panels, which offer excellent thermal insulation and superior waterproofing and moisture resistance. Different panel thicknesses are suitable for different temperatures and application scenarios. Generally, the thicker the panel, the better the insulation performance.   For walk-in freezer units with different temperature requirements, different PU/PIR sandwich panels can be selected:   1. -18℃ ~ -25℃ cold storage: 150mm PIR sandwich panels can be used for storing various aquatic products, meat products, and frozen foods;   2. -25℃ ~ -30℃ deep-temperature cold storage: 180mm and above PIR sandwich panels can be used for long-term storage of high-end seafood and meat, as well as freezing of ice cream and dairy products;   3. -30℃ ~ -40℃ ultra-low temperature cold storage: PIR sandwich panels with a thickness of 200mm or more must be used for long-term storage of deep-sea aquatic products, high-end seafood, and high-end beef and mutton.   4. Deep cryogenic storage at -40℃ and below: Requires 250mm thick PIR sandwich panels for the long-term preservation of vaccines, plasma, biological samples, viral strains and other biomedical and research materials, special industrial materials (such as aerospace materials and chemicals) and rare agricultural and insect specimens.