The petroleum industry is the industrial sector that extracts and refines oil (including natural oil, oil shale, and natural gas). It consists of oil field geological exploration, oil field development, and oil extraction, transportation, refining and processing units. Petroleum is the "blood" of industry and an important industrial energy source.

Chemistry is the abbreviation for "chemical process", "chemical industry", and "chemical engineering". Any technology that uses chemical methods to change the composition, structure of substances or synthesize new substances belongs to chemical production technology, which is also called chemical process. The products obtained are called chemicals or chemical products.

Metallurgy is the process and technique of extracting metals or metal compounds from minerals, and then processing these metals into metal materials with specific properties through various methods.

Electricity is an energy source that uses electrical energy as its power. The power system is one of the most significant achievements in the history of human engineering science. It is a system for power generation, transmission, transformation, distribution and consumption of electricity. It converts the primary energy of nature into electrical energy through mechanical devices, and then supplies the electricity to various users through transmission, transformation and distribution.

The shipbuilding industry is a modern comprehensive industry that encompasses ship manufacturing, sales, and the provision of related technical equipment. It has a significant impact on industries such as water transportation, marine development, and national defense construction.

The pharmaceutical industry refers to the sector engaged in drug research and development, production, sales, and after-sales services, encompassing multiple fields such as chemical pharmaceuticals, biopharmaceuticals, and traditional Chinese medicine. It plays a crucial role in safeguarding human health and improving quality of life.

Natural gas refers to all gases that exist naturally in nature, including those formed through various natural processes in the atmosphere, hydrosphere, and lithosphere (such as gas from oil fields, gas fields, mud volcano gases, coalbed methane, and biogenic gases, etc.).

New energy refers to various new types of energy in contrast to traditional fossil energy sources (such as coal, oil, and natural gas), mainly including solar energy, wind energy, biomass energy, geothermal energy, etc.