Construction of piping systems and chemical, nuclear, power generation, petroleum, heat supply, steam, and other plants; consultation services relating to construction; repair and maintenance of building equipment; repair and maintenance of computers and their peripherals, other electronic apparatuses and instruments; repair and maintenance of telecommunication apparatuses and instruments; repair and maintenance of measuring apparatuses and instruments; repair and maintenance of valves and other piping elements in chemical, nuclear, power generation, petroleum, heat supply, steam and other plants; repair and maintenance of other chemical, nuclear, power generation, petroleum, heat supply, steam plants, and other manufacturing plants

Designing of machines, apparatuses and instruments including their parts, or systems composed of such machines, apparatuses and instruments; computer software design, computer programming, and maintenance of computer software for monitoring installation and management condition of valves and other piping elements, and diagnosing the occurrence of risks, such as failures and accidents of plants on the basis thereof; computer software design, computer programming, and maintenance of computer software; consultancy in the field of computer software design, computer programming, and maintenance of computer software; technological consulting relating to plant operations, computers and industrial machines; testing and research on chemical, nuclear, power generation, petroleum, heat supply, steam and other plants, or machines, apparatuses, and instruments used in these plants; testing and research on other machines, apparatuses and instruments; rental of measuring apparatuses and instruments; design and development of computer programs for monitoring installation and management condition of valves and other piping elements, and diagnosing the occurrence of risks, such as failures and accidents of plants on the basis thereof; providing on-line non-downloadable computer programs in data networks for use in monitoring and managing corrosion; rental of computers in the field of piping systems and plants; inspection and diagnosis of chemical, nuclear, power generation, petroleum, heat supply, steam and other plants; inspection and diagnosis of wire communication apparatuses and instruments or radio communication apparatuses; inspection and diagnosis of telecommunication apparatuses and instruments, other than telephone sets, radio receivers and television receivers; inspection and diagnosis of detectors; inspection and diagnosis of measuring devices; inspection and diagnosis of computers and their peripherals, other electronic apparatuses and instruments; inspection in the nature of testing building equipment; inspection in the nature of testing computers and peripherals, other electronic apparatuses and instruments; inspection in the nature of testing telecommunication apparatuses and instruments; inspection in the nature of testing of measuring apparatuses and instruments; inspection in the nature of testing valves and other piping elements in chemical, nuclear, power generation, petroleum, heat supply, steam and other manufacturing plants; inspection in the nature of testing other chemical, nuclear, power generation, petroleum, heat supply, steam plants, and other manufacturing plants