Description:
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(1) - Mining services; quarrying services. Gas, oil, petroleum, minerals exploration, exploration of oilfields, drilling of wells, oil prospecting, oil-field exploitation, oil-field surveys, oil well testing, mining, ore and metals prospecting and mine exploitation.
(2) - Building construction; repair; installation services; drilling of wells; oil drilling; factory construction; furnace and smelter installation and repair; installation and repair of freezing equipment; machinery installation, maintenance and repair; mining extraction; mining services; quarrying services; pipeline construction and maintenance; road pavingtreatment of common metals, treatment of precious metals, treatment of metallic ores, treatment of petroleum, treatment of gas, treatment of coal, treatment of industrial oils, treatment of crude oil, treatment of metal alloys, treatment of chemicals, and coppersmithing; processing and treatment of ores and metals; processing and refining of oil and gas; Gas, oil, petroleum, minerals exploration, exploration of oilfields, drilling of wells, oil prospecting, oil-field exploitation, oil-field surveys, oil well testing, mining, ore and metals prospecting and mine exploitation.
(3) - Crude oil, petroleum ether, petroleum (raw and refined); natural fuel gases, coal, coke. Common metals and their alloys, unwrought or semi-wrought; petroleum, gas, oil, coal; ferroalloys; ores of metal.
(4) - Industrial oils, industrial greases, industrial lubricants, benzene, benzol, crude oil, diesel oil, petroleum ether, kerosene, methylated spirits, petroleum (raw and refined); natural and synthetic fuel gases, coal, coke, coal naphtha and coal tar oilCommon metals and their alloys, unwrought or semi-wrought; metal building materials namely profiled metal sheeting, metal roof and wall cladding, metal roof and wall decking, metal building frames, metal panels, metal blocks, metal strips, metal slabs, metal boards, metal linings, metal mouldings, metal tiles, metal structural supports, metal plates, metal pillars, purlins, girts, metal beams, metal bricks, metal stumps, bearers, studs, noggings, bracing, brackets, lintels, metal guttering and downpipes, flashing, facings, capping, metal doors and metal window frames; materials of metal for railway tracks, non electric cables and wires of common metal, pipes and tubes of metal for the mining, petroleum, gas, oil, coal and quarrying industries; ferroalloys; ores of metal.
(5) - Industrial oils, industrial greases, industrial lubricants, benzene, benzol, crude oil, diesel oil, petroleum ether, kerosene, methylated spirits, petroleum (raw and refined); natural and synthetic fuel gases, coal, coke, coal naphtha and coal tar oilCommon metals and their alloys, unwrought or semi-wrought; metal building materials namely profiled metal sheeting, metal roof and wall cladding, metal roof and wall decking, metal building frames, metal panels, metal blocks, metal strips, metal slabs, metal boards, metal linings, metal mouldings, metal tiles, metal structural supports, metal plates, metal pillars, purlins, girts, metal beams, metal bricks, metal stumps, bearers, studs, noggings, bracing, brackets, lintels, metal guttering and downpipes, flashing, facings, capping, metal doors and metal window frames; materials of metal for railway tracks, non electric cables and wires of common metal, pipes and tubes of metal for the mining, petroleum, gas, oil, coal and quarrying industries; ferroalloys; ores of metal.
(6) - Building construction; repair; installation services; drilling of wells; oil drilling; factory construction; furnace and smelter installation and repair; installation and repair of freezing equipment; machinery installation, maintenance and repair; mining extraction; mining services; quarrying services; pipeline construction and maintenance; road pavingtreatment of common metals, treatment of precious metals, treatment of metallic ores, treatment of petroleum, treatment of gas, treatment of coal, treatment of industrial oils, treatment of crude oil, treatment of metal alloys, treatment of chemicals, and coppersmithing; processing and treatment of ores and metals; processing and refining of oil and gas; Gas, oil, petroleum, minerals exploration, exploration of oilfields, drilling of wells, oil prospecting, oil-field exploitation, oil-field surveys, oil well testing, mining, ore and metals prospecting and mine exploitation.
(7) - Mining services; quarrying services. Gas, oil, petroleum, minerals exploration, exploration of oilfields, drilling of wells, oil prospecting, oil-field exploitation, oil-field surveys, oil well testing, mining, ore and metals prospecting and mine exploitation.
(8) - Crude oil, petroleum ether, petroleum (raw and refined); natural fuel gases, coal, coke. Common metals and their alloys, unwrought or semi-wrought; petroleum, gas, oil, coal; ferroalloys; ores of metal.
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