My Account
Narrow path between industrial pipes illuminated by the environment, oil factories and plants in the Kingdom of Saudi Arabia, the renaissance of the Saudi national economy, oil and gas refining, the concept of petroleum engineering in the Gulf States, large and huge warehouses and tanks, petrochemical industries and projects
Extract oil wealth from the depths of the seas, the concept of petroleum engineering in the Gulf countries, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, lighting towers and metal structures at sunset
Pipelines and steel cables, Oil and gas refinery in the industrial area, Petrochemical industries and projects, Pollution resulting from oil production, Factories and plants in the Kingdom of Saudi Arabia, Huge and large warehouses, Industrial engineering and equipment
Large and massive warehouses and tanks, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, towers and metal structures in desert lands, fuel factories and mines in the Kingdom of Saudi Arabia
Large and massive warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories and mines in the Kingdom of Saudi Arabia
Huge and large warehouses, industrial engineering and equipment, petrochemical industries and projects, liquid nitrogen tanks and heat exchanger coils for industrial gas production, factories and laboratories in the Kingdom of Saudi Arabia
Large and massive warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories and mines in the Kingdom of Saudi Arabia
Oil and gas refinery, lighting towers and metal structures, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia
Petrochemical industries and projects, oil and gas refinery, oil factories and plants in the middle of the snowy nature and cold weather of the Kingdom of Saudi Arabia, the renaissance of the Saudi national economy, lighting towers and metal structures, the concept of petroleum engineering in the Gulf countries
Oil and gas refinery, petrochemical industries and projects, renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, the concept of petroleum engineering, quality of machinery and equipment in factories that extract oil wealth from the depths of the seas
A gas station in one of the streets of the Kingdom of Saudi Arabia, a gas station, filling car fuel
Petrochemical industries and projects, an oil and gas platform for extracting oils, the renaissance of the Saudi national economy, an excavator performing exploration, the quality of machinery and equipment in factories that extract oil wealth from the depths of the sea, the concept of petroleum engineering
Industrial plants in the Kingdom of Saudi Arabia, smoke rising from factories and polluting the environment, development industries contributing to the renaissance of the Saudi national economy, large and huge warehouses and tanks, an industrial station with towers and metal structures at sunset, reliance on local national production
Quality of petroleum production plants and equipment, large industrial facilities, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, metal and chemical industries
Petroleum engineering concept in the Gulf countries, oil factories and plants in the Kingdom of Saudi Arabia, petrochemical industries and projects, the renaissance of the Saudi national economy, an aerial view of an oil and gas refinery, large and huge warehouses and tanks, steel pipelines and cables
Towers and metal structures in the lands, the renaissance of the Saudi national economy, desert, large and huge warehouses and tanks, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, fuel factories and mines in the Kingdom of Saudi Arabia
Lighting of towers and metal structures, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Large and massive warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories and mines in the Kingdom of Saudi Arabia
Metal and chemical industries, oil factories in Saudi Arabia, quality of petroleum production plants and equipment, large illuminated industrial facilities, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy
A gas station in one of the streets of the Kingdom of Saudi Arabia, a gas station, filling car fuel
Oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, towers and metal structures in desert lands, large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia
Petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, the renaissance of the Saudi national economy, the view of large and huge warehouses and tanks at sunset, oil factories and laboratories in the Kingdom of Saudi Arabia
Petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories and factories in the Kingdom of Saudi Arabia, gas refinery, the concept of petroleum engineering in the Gulf countries, lighting towers and metal structures at sunset, large and huge warehouses and tanks.
Oil and gas refinery, lighting towers and metal structures, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Oil factories and plants in the Kingdom of Saudi Arabia, petrochemical projects contributing to the renaissance of the Saudi national economy, oil and gas refinery, the concept of petroleum engineering in the Gulf States, lighting towers and metal structures at sunset, large and huge warehouses and tanks
Pipelines and steel cables, Saudi national economy renaissance, aerial view of oil and gas refinery, concept of petroleum engineering in the Gulf countries, oil factories and plants in the Kingdom of Saudi Arabia, petrochemical industries and projects, large and huge warehouses and tanks
Oil factories and plants in the Kingdom of Saudi Arabia, the renaissance of the Saudi national economy, oil and gas refining, the concept of petroleum engineering in the Gulf States, large and huge warehouses and tanks, petrochemical industries and projects
Oil factories and factories in the Kingdom of Saudi Arabia, oil and gas refineries, the concept of petroleum engineering in the Gulf countries, lighting towers and metal structures at sunset, large and huge warehouses and tanks, petrochemical industries and projects, the renaissance of the Saudi national economy
Work progress at work site, a, Back view of two Saudi Arabian Gulf workers wearing orange protective suits and helmets Oil and gas refinery, pipelines extending from the depths of the sea to the refineries, working in the field of petroleum engineering in the Kingdom of Saudi Arabia
Illuminated gas station on one of the streets of the Kingdom of Saudi Arabia, advanced gas station on the roads, supplying cars with the necessary fuel to operate and complete the road, modern and fast means of transportation, sky background at sunset
Lighting towers and metal structures at night, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, metal towers and structures in desert lands.
Large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia, metal towers and structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy.
Lighting towers and metal structures at night, the renaissance of the Saudi national economy, oil factories and plants in the Kingdom of Saudi Arabia, oil and gas refinery, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Oil and gas refineries, the renaissance of the Saudi national economy, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, metal towers and structures in desert lands.
The concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, oil and gas refineries, petrochemical industries and projects, towers and metal structures in desert lands.
A gas station on a street in the Kingdom of Saudi Arabia, a gas station, filling cars
Large and massive warehouses and tanks, lighting towers and metal structures at night, oil factories and laboratories in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, petrochemical industries and projects, the renaissance of the Saudi national economy
Oil factories and factories in the Kingdom of Saudi Arabia, the view of large and huge warehouses and tanks at sunset, the renaissance of the Saudi national economy, the concept of petroleum engineering in the Gulf countries, petrochemical industries and projects, gas refinery
Large and massive warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories and mines in the Kingdom of Saudi Arabia
Oil and gas refineries, petrochemical industries and projects, petroleum engineering concept in the Gulf countries, renaissance of the Saudi national economy, towers and metal structures in desert lands
Pipelines extending from the depths of the sea to the refineries, working in the field of petroleum engineering, oil and gas refinery, a picture from the back of two Saudi Arabian Gulf workers wearing protective suits and helmets supervising oil plants and factories in the Kingdom of Saudi Arabia
Fuel factories and mines in Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy
Oil and gas refineries, towers and metal structures in desert lands, fuel factories and mines in Saudi Arabia, large and huge warehouses and tanks, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy
Environmental pollution from oil and gas refinery smoke, petroleum engineering concept in the Gulf States, oil factories and plants in the Kingdom of Saudi Arabia, petrochemical development industries contributing to the renaissance of the Saudi national economy, large and huge warehouses and tanks, sky background at sunset
Oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment, engineering and urban development of oil refineries in the Kingdom of Saudi Arabia
Lighting of towers and metal structures at night, the renaissance of the Saudi national economy, oil factories and plants in the Kingdom of Saudi Arabia, oil and gas refinery, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Oil and gas refinery, petroleum engineering concept in the Gulf countries, oil factories and plants in the Kingdom of Saudi Arabia, petrochemical projects contributing to the renaissance of the Saudi national economy, large and huge warehouses and tanks, industrial development projects
Giant industrial engineering and equipment, oil and gas refinery in industrial area, steel pipelines and cables, petrochemical industries and projects, large industrial complex with tall smoke chimneys in Saudi Arabia, huge and large warehouses
Giant industrial engineering and equipment, oil and gas refinery in industrial area, steel pipelines and cables, petrochemical industries and projects, large industrial complex with tall smoke chimneys in Saudi Arabia, huge and large warehouses
Oil factories and plants in the Kingdom of Saudi Arabia, the renaissance of the Saudi national economy, oil and gas refining, the concept of petroleum engineering in the Gulf States, large and huge warehouses and tanks, petrochemical industries and projects
Giant industrial engineering and equipment, oil and gas refinery in industrial area, steel pipelines and cables, petrochemical industries and projects, large industrial complex with tall smoke chimneys in Saudi Arabia, huge and large warehouses
The concept of petroleum engineering in the Gulf States, the renaissance of the Saudi national economy, towers and metal structures in desert lands, large and huge warehouses and tanks, oil and gas refineries, fuel factories and mines in the Kingdom of Saudi Arabia, petrochemical industries and projects
Ensuring the safety of pipelines extending from the depths of the sea to refineries, oil and gas refineries, working in the field of petroleum engineering, a Saudi Gulf Arab man wearing a protective suit and a protective helmet evaluating the quality of machinery and equipment in oil laboratories and factories in the Kingdom of Saudi Arabia
Industrial plants in the Kingdom of Saudi Arabia, smoke rising from factories and polluting the environment, development industries contributing to the renaissance of the Saudi national economy, large and huge warehouses and tanks, an industrial station with towers and metal structures at sunset, reliance on local national production
Lighting of towers and metal structures at night, the renaissance of the Saudi national economy, oil factories and plants in the Kingdom of Saudi Arabia, oil and gas refinery, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
A panoramic picture of the oil and petroleum production plant in the Kingdom of Saudi Arabia, import and export of underground resources, growth and progress in the country’s economy, quality of machinery and equipment in oil and gas extraction plants.
Lighting of towers and metal structures at sunset, the renaissance of the Saudi national economy, oil factories and plants in the Kingdom of Saudi Arabia, oil and gas refinery, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Renaissance in the Saudi national economy, a black and white picture of oil factories and laboratories in the Kingdom of Saudi Arabia, an oil and gas refinery, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
View of large and huge warehouses and tanks at sunset, the renaissance of the Saudi national economy, the concept of petroleum engineering in the Gulf countries, petrochemical industries and projects, gas refinery, oil factories and laboratories in the Kingdom of Saudi Arabia
Towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories in the Kingdom of Saudi Arabia, large and huge warehouses and tanks
Lighting towers and metal structures at night, the renaissance of the Saudi national economy, oil factories and plants in the Kingdom of Saudi Arabia, oil and gas refinery, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
The concept of petroleum engineering, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, the quality of machinery and equipment in factories that extract oil wealth from the depths of the sea
View of large and huge warehouses and tanks at night, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, the renaissance of the Saudi national economy, oil factories and laboratories in the Kingdom of Saudi Arabia
Means of transportation, Emarat station in Sharjah, United Arab Emirates, multiple gasoline pumps, fueling cars
Large and massive warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories and mines in the Kingdom of Saudi Arabia
Oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, towers and metal structures in desert lands, large and huge warehouses and tanks, fuel factories and plants in the Kingdom of Saudi Arabia
Quality of petroleum production plants and equipment, large industrial facilities, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, metal and chemical industries
Huge industrial facilities illuminated at dawn, quality of petroleum production plants and equipment, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, metal and chemical industries
Working in the field of petroleum engineering, supervising oil plants and factories in the Kingdom of Saudi Arabia, a Saudi Arabian Gulf worker wearing a protective suit and a protective helmet, pipelines extending from the depths of the sea to the refineries, an oil and gas refinery
Fuel factories and mines in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, metal towers and structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy.
Petroleum engineering concept, oil and gas refinery, petrochemical industries and projects, renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, quality of machinery and equipment in factories that extract oil wealth from the depths of the seas
Oil and gas refinery, petrochemical industries and projects, renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, the concept of petroleum engineering, quality of machinery and equipment in factories that extract oil wealth from the depths of the seas
Quality of petroleum production plants and equipment, large industrial facilities, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, metal and chemical industries
Smoke rising from factories and polluting the environment, industrial plants in the Kingdom of Saudi Arabia, development industries contributing to the renaissance of the Saudi national economy, large and huge warehouses and tanks, an industrial station with towers and metal structures at sunset, reliance on local national production
Fuel factories and mines in Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy
Oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories and plants in Saudi Arabia, lighting towers and metal structures at night, pollution resulting from oil production
The field of petroleum engineering in the Gulf countries, oil and gas refineries, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories and laboratories in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, the view of the sky at sunrise with high illuminated structures
Gas Refinery, Petroleum Engineering Concept in Gulf Countries, Lighting Towers and Metal Structures at Sunset, Large and Huge Warehouses and Tanks in Desert Areas, Petrochemical Projects Contributing to the Revival of the Saudi National Economy, Oil Factories and Plants in the Kingdom of Saudi Arabia
Fuel factories in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy
Extract oil wealth from the depths of the seas, the concept of petroleum engineering in the Gulf countries, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, lighting towers and metal structures at sunset
Huge and modern tools and equipment, towers and metal structures in desert lands, engineering development of oil refineries in Saudi Arabia, oil mines on soft golden sands, harsh and dry climate, adoption of modern technologies in oil and gas production, petrochemical industries and projects
Smoke rising from factories and polluting the environment, industrial plants in the Kingdom of Saudi Arabia, development industries contributing to the renaissance of the Saudi national economy, large and huge warehouses and tanks, an industrial station with towers and metal structures at sunset, reliance on local national production
Means of transportation in the Kingdom of Saudi Arabia, a gas and fuel station, a close-up image of the pump tube filling the car’s tank with gasoline, technological environmental charging for technological cars
Gas station on one of the streets of the Kingdom of Saudi Arabia, gas station on Al-Quwaiqa'a Road during sunset, supplying cars with the necessary fuel to operate and complete the road
Renaissance of the Saudi national economy, the concept of petroleum engineering in the Gulf countries, petrochemical industries and projects, gas refinery, view of large and huge warehouses and tanks, oil factories and laboratories in the Kingdom of Saudi Arabia
Engineering development of oil refineries in Saudi Arabia, oil mines on soft golden sands, harsh and dry climate, adoption of modern technologies in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment, towers and metal structures in desert lands
Renaissance of the Saudi national economy, black and white photo of oil factories and plants in the Kingdom of Saudi Arabia, oil and gas refinery, petroleum engineering concept in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Lighting towers and metal structures at night, the renaissance of the Saudi national economy, oil factories and plants in the Kingdom of Saudi Arabia, oil and gas refinery, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Oil factories in Saudi Arabia, quality of oil production plants and equipment, huge illuminated industrial facilities, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, metal and chemical industries, a sky full of stars
Lighting of towers and metal structures at night, large and huge warehouses and tanks, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy
Oil and gas refinery, lighting towers and metal structures, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Fuel factories and mines in Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy
Petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the gas refinery, the renaissance of the Saudi national economy, the view of large and huge warehouses and tanks at sunset, oil factories and laboratories in the Kingdom of Saudi Arabia
Oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, towers and metal structures in desert lands, large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia
The renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, the quality of machinery and equipment in the factories that extract oil wealth from the depths of the seas, the concept of petroleum engineering in the Gulf countries, oil and gas refinery, petrochemical industries and projects
Renaissance in the Saudi national economy, a black and white picture of oil factories and laboratories in the Kingdom of Saudi Arabia, an oil and gas refinery, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Petroleum engineering concept, oil and gas refinery, petrochemical industries and projects, renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, quality of machinery and equipment in factories that extract oil wealth from the depths of the seas
Large and massive warehouses and tanks, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, towers and metal structures in desert lands, fuel factories and mines in the Kingdom of Saudi Arabia
The concept of petroleum engineering, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, the quality of machinery and equipment in factories that extract oil wealth from the depths of the sea
Factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Arab Gulf countries, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Lighting towers and metal structures at sunset, the concept of petroleum engineering in the Gulf countries, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks, oil factories and laboratories in the Kingdom of Saudi Arabia
The concept of petroleum engineering in the Gulf countries, petrochemical industries and projects, gas refinery, the renaissance of the Saudi national economy, the view of large and huge warehouses and tanks, oil factories and laboratories in the Kingdom of Saudi Arabia
Smoke rising from factory chimneys and polluting the environment, industrial plants in the Kingdom of Saudi Arabia, development industries contributing to the renaissance of the Saudi national economy, large and huge warehouses and tanks, an industrial station with towers and metal structures, reliance on local national production
Supervising oil plants and factories in Saudi Arabia, back view of a Saudi Arabian Gulf worker wearing a protective suit and helmet, pipelines extending from the depths of the sea to the refineries, working in the field of petroleum engineering, oil and gas refinery
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