Metal building materials, namely, metal soffits, metal cladding; metal expansion pins; metal slotted head screws; metal fixing hooks; metal fixing bars for railings, metal fixing bars as fasteners; metal anchoring bolts; metal screws; metal construction dowels; expansion bushings, namely, metal pipe connectors; metal fasteners for thermal insulations, namely, metal rivets, metal bolts; metal fasteners for facade insulations, namely, metal threaded fasteners; metal fasteners for roof insulatio...