Metal sandwich panels are emerging as a cutting-edge solution for exterior wall insulation and decoration in China. While relatively new to the domestic market, this material has already gained widespread acceptance in countries like Japan and South Korea, where it has been used extensively for both residential and commercial construction.

These panels are engineered with a multi-layered structure for enhanced performance. The exterior surface consists of a high-quality galvanized steel sheet, specially treated with a protective coating composed of 55% aluminum and 43% zinc for excellent durability and corrosion resistance. At the core lies high-density polyurethane foam, boasting a closed-cell rate of up to 99.6%. This same material is commonly used in the thermal insulation of refrigerators and air conditioners, ensuring both high efficiency and environmental safety.

The inner layer is finished with an aluminum foil composite, which provides robust protection against heat, moisture, and fire. This triple-layer configuration ensures outstanding thermal insulation and energy savings, while also offering long-lasting aesthetic appeal. The surface remains vibrant for over 15 years without fading, and the total service life of the panels can extend to 40 or even 50 years.

Beyond its excellent insulation properties, metal sandwich panels also offer numerous other advantages:

• Attractive appearance with multiple textures and finishes

• Effective thermal insulation and energy efficiency

• Fire and moisture resistance

• Lightweight and impact-resistant for structural safety

• Quick and simple installation, reducing labor costs

• Soundproofing and noise reduction

• Environmentally friendly, with no toxic emissions

These features make the panels suitable for year-round installation across a wide range of climates, and they are applicable in both new builds and renovations for homes, offices, public buildings, and industrial facilities.

With growing awareness of green building practices and the need for improved facade insulation, metal sandwich panels are set to become a mainstream choice in China’s construction industry, just as they already are in other parts of Asia.