Common metals and their alloys; metal building materials; modular metallic structures; modular prefabricated steel framing; modular wall panelling of metal; metallic modules for use in constructing buildings; prefabricated building materials and components (metal); pre-formed building sections of metal; prefabricated modules for use in constructing buildings; prefabricated buildings (metal); metal buildings; domestic, commercial and industrial buildings of metal; high rise buildings constructed of metallic prefabricated modules; apartments and offices (metal buildings); metal transportable and relocatable buildings; metal relocatable buildings incorporating sanitary installations; metal reinforcement materials for building; fittings of metal for buildings; metallic articles of building purposes; including instructional materials sold together with the aforesaid goods; accessories, parts and fittings for all the aforesaid goods allowed in this class