Polystyrene sandwich panels have become a popular new composite material due to their light weight, beautiful appearance, bright colors, high strength-to-weight ratio, and quick installation.
Polystyrene sandwich panels are a type of efficient new composite building material. They consist of colored steel sheets as the surface layer and closed-cell, self-extinguishing polystyrene foam as the core material. These are bonded together using a high-strength adhesive after being pressed into shape by an automated continuous forming machine. They are mainly used for the roofs and walls of public buildings and industrial plants, clean rooms, combination cold storage facilities, building interlayers, and kiosks. They offer the advantages of simultaneous insulation and waterproofing, fast construction, durability, and an attractive appearance.

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