Acoustic blocks; Blocks made of concrete; Blocks made of non-metallic materials for building purposes; Blocks made of non-metallic materials for coastal protection; Blocks made of non-metallic materials for river-bank protection; Building blocks incorporating insulating materials; Cement blocks; Concrete blocks; Concrete flooring blocks; Masonry blocks; Non-metallic blocks for construction; Non-metallic blocks for use in flooring construction; Non-metallic building blocks; Non-metallic building materials in the form of blocks; Non-metallic flooring blocks; Non-metallic wall blocks; Reinforced thermal building blocks