Superior and durable thermal insulation properties
Guoyang extruded polystyrene has a thermal conductivity of 0.028 W/m·K, featuring high thermal resistance and low linear expansion rate. Its thermal conductivity is significantly lower than that of other insulation materials, such as EPS boards, foamed polyurethane, insulating mortar, and cement perlite. Due to the stable chemical and physical structure of this material, it ensures the long-lasting and stable insulation performance, making it one of the world's leading building insulation materials.
Superior waterproof and moisture-proof properties
Guoyang Extruded Polystyrene boards feature a tightly closed cell structure. The polyethylene molecule structure itself is not absorbent, and both sides of the board have no gaps, thus, it has a low water absorption rate and excellent moisture-proof and waterproof properties.
High-quality eco-friendly
Guoyang Extruded Polystyrene does not decompose or mildew, does not emit harmful substances, and has stable chemical properties. During production, we utilize advanced CO2 foaming technology, replacing the traditional Freon foaming, without damaging the atmospheric ozone layer. Made from environmentally friendly materials, it does not produce harmful gases or wastewater. The solid waste generated can be recycled and reused, making it a high-quality, eco-friendly product.
Corrosion-resistant, durable
Generally, rigid foam insulation materials tend to age and absorb moisture after a few years, leading to a decline in performance. However, Guoyang extruded boards, with their excellent corrosion and aging resistance, as well as insulation properties, can maintain their superior performance even under high steam pressure.
High-strength compressive resistance
Guoyang Extruded Polystyrene Board, with its tightly connected foaming structure and seamless walls, boasts high compressive strength and remains unchanged even after long-term immersion in water. Therefore, it is well-suited for use in parking platforms, airport runways, highways, and other applications where excellent impact resistance is required.
Lightweight, high hardness

Guoyang extruded polystyrene features a fully closed-cell foam structure that forms a lightweight and uniform honeycomb structure, resulting in high hardness. Unlike polyurethane foam or phenolic foam, it is not brittle, making it less prone to damage. It is easy to handle, install, and cut, and won't affect the structural load-bearing capacity when used for roof insulation.