MLEVEL

Automatic vacuum control devices; Scientific leak detectors for determining water content in petroleum products; Mechanical coding devices; Automatic control devices; Gas flow control devices; Programmable control devices; Detection devices; Automatic dosing devices; Volumetric measuring devices; Regulating and control apparatus; Uninterruptible power supply apparatus; Regulated power supply apparatus; Thermosonic joining apparatus; Detection apparatus and instruments; Electrical devices for processes control; Gas detectors for detecting the presence of gas; Electric power-line transmission machines and apparatus; Software; Electric valves thermionic; Electric control valves

Construction of structures for the storage of crude oil; Construction of structures for the production of crude oil; Construction of hydroelectric factories; Construction of oil and gas storage facilities; Extraction of oil from oil fields; Oil extraction; Mining extraction; Installation of oil production apparatus; Installation of oil exploration instruments; Installation of oil refineries; Installation of hydroelectric systems; Maintenance and repair of oil and gas maintenance facilities; Drilling of water and oil wells; Drilling of deep oil and gas wells; Oil drilling and pumping; Renovation of nuclear power plants; Repair or maintenance of nuclear power plants; Oil well casing, tubing, and drill pipe installation; Oil extraction services; Oil drilling services