42 Designing of machines, apparatus, instruments (including their parts) or systems composed of such machines, apparatus and instruments; design of computers; computer system design; design and development of computer hardware; consultancy in the design and development of computer hardware; mechanical engineering; design and development of data processing apparatus; computer programming; programming of computer software; development and creation of computer programs for data processing; data encryption services; data security consultancy; introduction and explanation of the performance and operating methods of computers, automobiles, and other machines that require a high degree of specialized knowledge, skill, or experience to operate properly for their intended use; technical advice relating to operation of computers; computer technology consultancy; consultancy in the field of information technology; computer system analysis; testing, inspection or research of pharmaceuticals, cosmetics or foodstuffs; research relating to building construction or city planning; testing or research on prevention of pollution; testing or research on electricity; testing or research on civil engineering; testing, inspection or research on agriculture, livestock breeding or fisheries; testing or research on machines, apparatus and instruments; mechanical research; calibration services; engineering feasibility studies; technical feasibility studies; analysis of technical data; research and development of new products for others; product development for others; product development consultation; rental of measuring apparatus; computer rental; providing computer programs; software as a service (SaaS); platform as a service (PaaS)