37 Construction of systems for the downhole conveyance, retrieving, and redeploying of electrically-powered downhole tools and artificial lift technologies, compressors, and submersible pumps into and from underground and underwater locations, namely, the installation, maintenance, repair, and replacement thereof; advising services with respect to the above services; Consultation and technical consultation in the field of construction of systems for extracting oil, other fluids and gas from underground and underwater locations, namely, the installation, maintenance, repair and replacement thereof