‌Double-sided Color Steel Magnesium Composite Duct‌ is a device used for air conditioning and ventilation, with its principle based on the general design of color steel ducts but with a special emphasis on the materials and characteristics of the double-sided color steel magnesium composite duct. This duct utilizes color steel composite sandwich panels as its material, with the core being an insulating material. One side features a composite antibacterial coating foil, while the other side is coated with various colored color steel plates. The insulating material typically includes polyurethane, phenolic resin, polystyrene, inorganic substances, extruded boards, or glass fiber, among others. This design not only offers excellent insulation properties but also boasts fire-resistant, waterproof, dustproof, environmentally friendly, corrosion-resistant, smokeless, tasteless, shock-absorbent, noise-reducing, thermal insulation, non-deforming, non-cracking, non-absorbent moisture, and good volume stability. Furthermore, the surface of the double-sided color steel magnesium composite duct is smooth and flat, with a low friction coefficient and low air resistance, making it outstanding in ventilation systems. This duct is an upgraded version of the traditional glass fiber duct and also an ideal substitute for galvanized steel plate ducts, combining the advantages of both. It has both insulation and rigidity, overcoming the issues of weak strength and easily damaged outer walls in glass fiber ducts, while also inheriting the benefits of galvanized steel plate ducts.