42 Scientific and technological services, namely, research and design in the field of refractory linings, industrial furnaces, industrial high-temperature aggregates, industrial installations for the melting of metals, industrial automation installations, RFID (radio frequency identification) gates, computer networking hardware, and computer datacenter architecture; industrial chemical and materials analysis, industrial research and industrial design services in the field of refractory linings, industrial furnaces, industrial high-temperature aggregates, industrial installations for the melting of metals, industrial automation installations, RFID (radio frequency identification) gates, computer networking hardware and computer datacenter architecture; quality control for others and authentication services, namely, electronic document and e-mail authentication services, not for identification verification; design and development of computer hardware and software; IT computer programming services; software development, programming and implementation; website hosting services, software as a service services featuring software for use in database management, and for use in machinery programming in the field of industrial furnaces, industrial high-temperature aggregates, industrial installations for the melting of metals, industrial automation installations, RFID (radio frequency identification) gates, computer networking hardware and computer datacenter architecture, and rental of software for database management in the fields of industrial furnaces, industrial high-temperature aggregates, industrial installations for the melting of metals, industrial automation installations, RFID (radio frequency identification) gates, computer networking hardware and data centers; rental of computer hardware and data center facilities; IT consultancy, advisory and information services relating to installation, maintenance, and repair of computer software; IT security services in the nature of protection and recovery of computer data; rental services in the field of science and computer technology equipment, namely, computer hardware; engineering services; testing, authentication and quality control of refractory linings, industrial furnaces, industrial high-temperature aggregates, industrial installations for the melting of metals, industrial automation installations, RFID (radio frequency identification) gates, computer networking hardware and computer datacenter architecture; design services of computer systems, refractory linings, industrial furnaces, industrial high-temperature aggregates, industrial installations for the melting of metals, industrial automation installations, RFID (radio frequency identification) gates, computer networking hardware, and computer datacenter architecture; consultancy and information in relation to the aforesaid services