Building construction; repair of apparatus, devices and systems in the fields of electrical engineering, electronics, optics, precision mechanics and medical engineering; installation, corrective maintenance, maintenance, renovation and reconstruction of technical systems and technical products in the fields of electrical engineering, electronics, optics, precision mechanics, medicine as well as of tools, land craft aircraft and watercraft, buildings including their technical installations, production and storage facilities for industry and trade including power generation and distribution equipment including remedying of damage caused by environmental effects, exposure e.g. to fire, water, acids or dust or by toxic substances with the result of the technical systems being impaired or endangered

Evaluations, appraisals, inspections and making out of reports in the fields of electrical engineering, electronics, optics, precision mechanics and medical engineering