Cable trench concrete covers, made by high-temperature molding, feature attractive appearance, high strength, acid and alkali resistance, corrosion resistance, excellent fire performance, lightweight, and no need for paint maintenance. 1. Corrosion resistance: No serious corrosion occurs in water and general acids or alkalis. 2. High strength: No cracks appear after hammering tests, with much higher strength than glass fiber reinforced plastic. 3. Lightweight: Due to the low density of the material, it is much lighter than the same specification of steel rebar. 4. Good fire performance: As the material does not burn, it can prevent fire. 5. Aesthetics: The surface, after special treatment, has a beautiful appearance and diverse shapes.