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

The chemical industry is an important pillar of the national economy, covering multiple fields from chemical production to technological development. Its development is closely related to macroeconomics, market demand, and technological innovation.

Metallurgy refers to the process and technique of extracting metals or metal compounds from minerals and using various processing methods to produce metallic materials with certain properties. Metallurgy has a long history of development, from the Stone Age to the subsequent Bronze Age, and then to the large-scale development of modern steel smelting. The history of human development integrates the history of metallurgical development.

The production and consumption processes of electrical energy are carried out simultaneously, without interruption or storage, and require unified scheduling and distribution. The power industry provides the basic driving force for industry and other sectors of the national economy, and subsequently builds a number of large and medium-sized hydropower stations in areas where conditions permit, which is a leading sector in the development of the national economy.

The shipbuilding industry is a comprehensive industry that provides technical equipment for the shipping industry, ocean development, and national defense construction. It plays a strong driving role in the development and expansion of key industries such as steel, petrochemicals, light industry, textiles, equipment manufacturing, and electronic information exports.

The paper industry is an industrial sector that manufactures various types of paper and cardboard. It includes several aspects such as pulp manufacturing using wood, reed, sugarcane bagasse, straw, wheat straw, cotton straw, hemp stalks, cotton and other raw materials to produce pulp, paper and paperboard manufacturing, as well as processing paper manufacturing for coating, polishing, gluing, laminating and other processing paper and font paper plates. Papermaking is one of China's the Four Great Inventions.

Natural gas refers to a type of combustible gas that exists in nature and is a fossil fuel. Natural gas is stored in underground porous rock formations, including oilfield gas, gas field gas, coalbed methane, mud volcano gas, and biogenic gas, with a small amount also occurring in coal seams. The commonly used definition of "natural gas" for a long time is a narrow definition from an energy perspective, referring to a mixture of hydrocarbons and non hydrocarbon gases naturally stored in geological formations.

New energy refers to various forms of energy beyond traditional sources such as coal, oil, and natural gas, also known as unconventional energy. Refers to energy that has just begun to be developed and utilized or is actively researched and yet to be promoted. Including solar energy, geothermal energy, wind energy, ocean energy, biomass energy, and nuclear fusion energy, with green and low-carbon characteristics, no risk of resource depletion, and declining energy prices, it is a key area for future energy development.