Thus Blocks Are Quite Light and Will Not Provide Additional Loads on the Ceiling. Made by Pressing the Expanded Clay Concrete Mixture, Which Includes High -quality Cement, Quartz Sand and Expanded Clay. Thus, The Composition Is Environmentilly Friendly, Which is Very Important for a Person Who Cares ABOUT HIS HeIS. This Building Material is Also Characterized by High Thermal Insulation Ability, Air Permeability and At the Same Time Low Price.