Metal building materials, namely, metal building flashing, building panels of metal and metal trim for buildings; frameworks of metal for building; framework scaffolding of metal; transportable buildings of metal; prefabricated modular platforms of metal with window or door frames of metal for use in buildings, building of fair stalls and shops, events and display stands; pipes and tubes of metal; structural joint connectors of metal; couplings of metal for tubing; junctions of metal for pipe...