9
Apparatus for recording sound; data processing equipment; electronic publications (downloadable); equipment for gathering and recording seismic data; hydrophones, geophones, accelerometers and other sensors and indicators; oil and gas exploration and exploitation apparatus and instruments; optical apparatus and instruments; pressure, temperature and flow monitoring apparatus and instruments; seismic and geophysical apparatus and instruments; surveying and measuring apparatus and instruments; telecommunication and data transmission equipment; testing apparatus not for medical purposes
37
Building, installation, maintenance and repair of the following apparatus and instruments: apparatus for recording sound; data processing equipment; equipment for gathering and recording seismic data; hydrophones, geophones, accelerometers and other sensors and indicators; oil and gas exploration and exploitation apparatus and instruments; optical apparatus and instruments; pressure, temperature and flow monitoring apparatus and instruments; seismic and geophysical apparatus and instruments; surveying and measuring apparatus and instruments; telecommunication and data transmission equipment; testing apparatus not for medical purposes
42
Collation and recordal of seismic data; conducting feasibility studies relative to oil field exploitation; development of systems for the transmission of data; oil-field and gas-field surveys; optical surveys and services; reservoir monitoring and reservoir management; scientific, technological, design, analysis and surveying services for oil-fields and gas-fields; scientific, technological, design, analysis and surveying services for industry; technical consultancy services in relation to oil field and gas field exploitation; seismic and geophysical surveys