42 Consultation in the field of auxiliary design for oil and gas industrial machines; Consulting services in the field of industrial engineering; Consulting services in the field of mining exploration; Consulting services in the fields of selection, implementation and use of computer hardware and software systems for others; Design and development of computer software for engineering, industrial cleaning, hygienization, sterilization and disinfection, gas and petroleum, hvac, transportation of products, janitorial and custodial services, pest control, industrial painting; Design of home pages and web sites; Engineering services in the field of reducing operational costs of industrial machinery; Exploration and searching of oil and gas; Gas exploration; Inspecting buildings for the existence of mold; Petroleum exploration; Product research; Product safety testing; Providing quality assurance services in the field of engineering, industrial cleaning, hygienization, sterilization and disinfection, gas and petroleum, hvac, transportation of products, janitorial and custodial services, pest control, industrial painting; Providing technology information in the field of engineering, industrial cleaning, hygienization, sterilization and disinfection, gas and petroleum, hvac, transportation of products, janitorial and custodial services, pest control, industrial painting; Scientific research in the field of engineering, industrial cleaning, hygienization, sterilization and disinfection, gas and petroleum, hvac, transportation of products, janitorial and custodial services, pest control, industrial painting; Scientific research relating to the impact of consumer and industrial products on environmental preservation; Scientific study and research in the field(s) of engineering, industrial cleaning, hygienization, sterilization and disinfection, gas and petroleum, hvac, transportation of products, janitorial and custodial services, pest control, industrial painting