42 Construction engineering, engineering; research and technical consultation in the fields of environmental remediation technology, renewable energy technology, heating for HVAC engineering, air conditioning, clean room technology, and nuclear technology; performing chemical analysis; designing and updating computer software for others; and software as a service (SAAS) services featuring software for use in database management, for use as a spreadsheet, for word processing; technical support, namely, monitoring technological functions of computer network systems for industrial plants; testing of materials, namely, trash, industrial residue, waste water and residue of nuclear plants; technical project planning in the field of mechanical engineering of industrial buildings and facilities, namely, energy supply plants, industrial plants for energy, power, long distance energy, and compressed air production and supply, air conditioning and ventilation systems