Building and construction materials and elements of metal, namely, brackets of metal for building, rails and posts of metal for building, plates of metal for building; Metal goods for use in mounting solar cells, namely, brackets of metal for building, rails and posts of metal for building, plates of metal for building; Metal goods for use in construction, namely, brackets of metal for building, rails and posts of metal for building, plates of metal for building; Unprocessed and semi-processe...