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Machines for the petroleum exploiting and refining industry, namely, oil refining machines, pulp refining machines, oil field equipment, namely, drilling rig mechanical handling machines and devices; Machines for the petrochemical industry, namely, separating machines for chemical processing, dissolving machines for chemical processing, extracting machines for chemical processing; Machines, namely, oil drilling rigs; drilling rigs, floating or non-floating; oil well cleaning machines; Machines, namely, tractor hoists; machines for geological exploration, mining and or concentration; mine borers; drilling machines; mine working machines