COSL

Radioactive elements for scientific purposes; chemical additives for drilling muds; drilling muds for use in oil and gas wells; chemical reagents for non-medical purposes; chemical preparations for analyses in laboratories, other than for medical or veterinary use

Drilling machines; mine working machines in the nature of mine borers to exploit natural resources; Mobile offshore drilling units, jack up drilling rigs, oil drilling platforms; oil drilling machines, namely, drilling rig machines and devices to drill water wells, oil well pumping machines, or natural gas extraction well pumping machines; sludge pump specially used for petroleum; electrical submerge oil pump for use in connection with petroleum; capstans; hoists; handling machines and attachments for lifting or lowering loads, namely, lifts, cranes, rope and pulley systems as parts of machines; centrifugal pumps

Drilling of wells; heating equipment installation and repair; machinery installation, maintenance and repair; Rebuilding and repairing rotary parts of rig equipments that have been worn or partially destroyed; rebuilding machines that have been worn or partially destroyed; electric appliance installation and repair; freezing equipment installation and repair; kitchen equipment installation and repair; shipbuilding; rust proofing; painting services; elevator installation and repair; fire alarm installation and repair; burglar alarm installation and repair

Boat rental; ice-breaking for the shipping industry; truck hauling; salvage of ships; ship brokerage; maritime towing; salvaging of ships towing; underwater salvage; stevedoring; piloting

Analysis for oil field exploitation; oil well testing; geological surveys; conducting geological surveys; conducting oil field surveys; oil field prospecting; oil prospecting; geological prospecting; geological research; surveying; chemical analysis; chemistry services in the nature of chemistry consultation; chemical research; land surveying; underwater exploration