Concrete building elements, namely, concrete claddings, concrete frames, concrete floors, concrete formwork; Building materials of concrete, namely, concrete blocks, concrete posts, concrete slabs, concrete panels; instrumented concrete structural elements, namely, concrete matrices, pre-cast concrete wall forms, concrete walls for building; Coverings of concrete, namely, concrete floor coverings, concrete roof coverings, concrete ceiling coverings; concrete pipes

Concrete building elements, namely, concrete claddings, concrete frames, concrete floors, concrete formwork; Building materials of concrete, namely, concrete blocks, concrete posts, concrete slabs, concrete panels; instrumented concrete structural elements, namely, concrete matrices, pre-cast concrete wall forms, concrete walls for building; Coverings of concrete, namely, concrete floor coverings, concrete roof coverings, concrete ceiling coverings; concrete pipes