They are decorative panels that are used in designing upscale residential and commercial projects. These panels are a mixture of Charcoal and Polystyrene proportionately.Charcoal incorporates strength to the product whereas Styrofoam made from recycled Thermocol (EPS and HIPS) makes the product resistant to warping. In addition, these panels are waterproof and fire retardant. They can be used on inside as well as outside surfaces and can be painted also.