The oil industry is an important part of fuel industry, covering natural oil and oil shale exploration, mining, refining, storage and transportation, and other links, sectors of the national economy to provide all kinds of fuel oil.

The chemical industry is the general term for enterprises and institutions engaged in the production and development of the chemical industry. This industry permeates various fields and is an indispensable and important part 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.

A power station is a factory that converts various primary energy sources contained in nature into electrical energy. The development of motor manufacturing technology, the expansion of the application scope of electric energy, and the increase in the demand for electricity in production have led to the emergence of power plants.

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.

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 papermaking industry is an industry that mainly uses wood and other raw materials to conduct research and development and production of pulp, paper, paperboard and other fiber matrix products. It is one of the Four Great Inventions of our country.

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.