concrete treatment services, namely, concrete sealing to repair and restore the physical and chemical properties of concrete or stone and its structural components with a multi-phase, inorganic compound to increase strength characteristics, water resistance, frost resistance, wear resistance of concrete, when applied on the hardened surface of concrete or stone; concrete treatment services, namely, concrete sealing to prevent development of biological contaminants such as fungi, mold, algae; concrete treatment services, namely, concrete sealing to crystallize the pores of concrete or stone, reduce the pores, thereby increase its strength characteristics, hardness, wear resistance, hydrophobicity and frost resistance
Building Construction and Repair