The petroleum industry is an important component of the fuel industry, covering multiple links such as exploration, extraction, refining, storage and transportation of natural petroleum and oil shale, and providing various fuel oils for all sectors of the national economy.

The chemical industry is the general term for enterprises and institutions engaged in the production and development of the chemical industry, covering three major categories: petrochemicals, basic chemicals, and chemical fibers. This industry has permeated into various fields and is an indispensable and important component of the national economy.

The metallurgical industry refers to the industrial sector that involves the exploration, mining, beneficiation, smelting and rolling of metallic minerals into products. It is divided into two major categories: the ferrous metallurgical industry and the non-ferrous metallurgical industry.

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

Food engineering is the general term for engineering and technical fields such as grain and oilseed processing, food manufacturing and beverage manufacturing. It is a comprehensive discipline and engineering technology field involving multiple links such as food production, processing, preservation and transportation.

Water treatment engineering involves purifying, softening, disinfecting, and removing iron and manganese from water that does not meet the requirements. A project of removing heavy metal ions and filtration.

The power industry is an industrial sector that converts various types of primary energy into electricity through power generation facilities and transmits the electricity to the end users. It is an important basic industry of the national economy.

Natural gas is a clean and efficient fossil energy source, with methane as its main component. It covers the entire industrial chain from the exploration, development, production, purification, storage, transportation to sales and utilization of natural gas. It occupies an important position in the global energy structure.

New energy refers to renewable energy that can be systematically developed and utilized on the basis of new technologies, including solar energy, wind energy, hydropower, biomass energy, geothermal energy, ocean energy, nuclear energy, etc.