General projects for construction works (projects subject to legal authorization and subject to the approval of the relevant authorities for the implementation of operational activities, subject to the approval of the relevant authorities, and subject to the results of the approvals); general projects: technical services, technology development, technical advice, technology exchange, technology transfer, technology promotion; computer system services; retailing of computer hardware and hardware and assistive equipment; sale of mechanical parts, parts and components; sale of construction materials; sale of metal materials; retailing of hardware products; sale of electronic products; retailing of electronic devices; sale of cameras and equipment; sale of electronic measuring devices; distribution of electrical switch control equipment; sale of optical electronic devices; integration of information systems; operation of the market for second-hand vehicles (in addition to projects for w...