42 Scientific and technological services, namely, industrial research and design in the fields of industrial construction and engineering, and chemical and industrial plants and installations, and installations and facilities for processing chemicals, plastics, gases, oils and cracker feedstock; industrial research services in the fields of industrial construction and engineering, and chemical and industrial plants and installations, and installations and facilities for processing chemicals, plastics, gases, oils and cracker feedstock; design and development of computers and computer software; engineering services; technical, graphic and digital drawing services, namely, industrial design services; product design and product development services in the fields of industrial construction and engineering, and chemical and industrial plants and installations, and installations and facilities for processing chemicals, plastics, gases, oils and cracker feedstock; inspection of installations and apparatuses for industrial construction and engineering, and chemical and industrial plants, and facilities for processing chemicals, plastics, gases, oils and cracker feedstock for quality control purposes; scientific and technological services, namely, testing of installations and apparatuses for industrial construction and engineering, and chemical and industrial plants, and facilities for processing chemicals, plastics, gases, oils and cracker feedstock; monitoring, for scientific purposes, of installations and apparatuses for industrial construction and engineering, and chemical and industrial plants, and facilities for processing chemicals, plastics, gases, oils and cracker feedstock for quality control purposes; environmental engineering services; chemical analysis and research; providing information in the field of engineering through the preparation of technical expert reports by engineers; conducting scientific research through technical project studies; engineering and technical civil engineering drawing services; technical advice relating to product safety testing in the fields of industrial construction and engineering, and chemical and industrial plants and installations, and installations and facilities for processing chemicals, plastics, gases, oils and cracker feedstock; consultancy and information regarding the aforesaid services; the aforesaid services also provided via electronic networks, such as the Internet