1) Lightness 2) Water absorptionbelow the 0.1%. 3) Non-freezing Polymer Concrete Channel is a new construction material made from resin, sand and mineral components. The U-sharp channel with grating fixed on top of it, as well as end cap and outlet, is a complete system. The Versatility of our channels allows applications to reach from residential, commercial, industial to agricultural-bungalows, ...