Props of metal; steel tubes; building materials of metal; rails of metal; straps of metal for handling loads; locks of metal for vehicles; strongboxes [metal or non-metal]; strap-hinges of metal; containers of metal [storage, transport]; metal containers for storage and transport

Computer software, recorded; time recording apparatus; electro-dynamic apparatus for the remote control of signals; surveying apparatus and instruments; voltage regulators for electric power; converters, electric; electric transformers; supercapacitors for energy storage; condensers [capacitors]; piezoelectric switches; batteries; battery chargers; battery charge devices; solar batteries