CLEVER WALL

Hollow blocks for building purposes made of non-metal materials, namely, urethane, polycarbonate, and plastic; Non-metal building materials, namely, concrete, urethane, plastic, and polycarbonate interlocking plastic blocks used to construct structures in the nature of walls and partitions; Concrete retaining walls; Blocks of concrete; Concrete walls; Blocks for building purposes made of non-metal materials, namely, plastic, urethane, and polycarbonate