42 Computer software design, computer programming, or maintenance of computer software for detecting or analyzing fluctuating states of valves and other piping elements; computer software design, computer programming, or maintenance of computer software for simulating optimum energy efficiencies and other plant operation efficiencies of chemical, nuclear, power generation, petroleum, heat supply, steam and other plants; computer software design, computer programming, or maintenance of computer software for diagnosing and improving energy efficiencies and other plant operation efficiencies of chemical, nuclear, power generation, petroleum, heat supply, steam and other plants; computer software design, computer programming, or maintenance of computer software for visualizing fluctuating states of detected or analyzed valves and other piping elements, simulated results for optimizing energy efficiencies of plants and other plant operating efficiencies, or diagnosed and improved results for energy efficiencies of plants, and other plant operating efficiencies; computer software design, computer programming, or maintenance of computer software for detecting or analyzing plant operating states of chemical, nuclear, power generation, petroleum, heat supply, steam and other plants; computer software design, computer programming, or maintenance of computer software for diagnosing and improving plant operating states of chemical, nuclear, power generation, petroleum, heat supply, steam and other plants; computer software design, computer programming, or maintenance of computer software for visualizing fluctuating states of detected or analyzed valves and other piping elements, and diagnosed and improved results for plant operating states; computer software design; computer programming; maintenance of computer software; consultancy in the field of computer software design, computer programming, or maintenance of computer software; providing temporary use of online non-downloadable computer programs for detecting and analyzing fluctuating states of plumbing valves and other piping elements; providing temporary use of online non-downloadable computer programs for simulating optimum energy efficiencies and other plant operation efficiencies of chemical, nuclear, power generation, petroleum, heat supply, steam and other plants; providing temporary use of online non-downloadable computer programs for diagnosing and improving energy efficiencies and other plant operation efficiencies of chemical, nuclear, power generation, petroleum, heat supply, steam and other plants; providing temporary use of online non-downloadable computer programs for visualizing fluctuating states of detected or analyzed plumbing valves and other piping elements, simulated results for optimizing energy efficiencies of plants and other plant operating efficiencies, or diagnosed and improved results for energy efficiencies of plants, and other plant operating efficiencies; providing temporary use of online non-downloadable computer programs for detecting or analyzing plant operating states of chemical, nuclear, power generation, petroleum, heat supply, steam and other plants; providing temporary use of online non-downloadable computer programs for diagnosing and improving plant operating states of chemical, nuclear, power generation, petroleum, heat supply, steam and other plants; providing temporary use of online non-downloadable computer programs for visualizing fluctuating states of detected or analyzed valves and other piping elements, and diagnosed and improved results for plant operating states; rental of measuring apparatus and instruments; testing or research on chemical, nuclear, power generation, petroleum, heat supply and steam plants, machines, apparatus and instruments used in these plants; testing or research on machines; testing on the functionality of apparatus and instruments; designing of machines, apparatus, instruments including their parts or systems composed of such machines, apparatus and instruments; technological advice relating to operation of computers, industrial plants and industrial machines