The metallurgical industry refers to the industrial sector that involves the exploration, mining, selection, smelting and rolling of metallic minerals to produce finished materials. It includes two major categories: the black metallurgical industry and the non-ferrous metallurgical industry.

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 refers to all enterprises and units engaged in the production and development of chemical industries. This industry extends to various fields and is an indispensable and crucial component of the national economy.

The shipbuilding industry covers the design, construction and maintenance of vessels and related equipment, including shipyards, marine equipment manufacturers and services such as ship design, shipbuilding, repair, supporting equipment manufacturing, trade and shipping management.

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 electrical energy, and the increasing demand for electricity in production have all led to the emergence of power plants.

The purpose of water treatment is to remove or reduce impurities, pollutants, microorganisms, etc. in water, so that the water can meet the water quality standards suitable for specific purposes. These purposes include, but are not limited to, drinking water supply, industrial water treatment, wastewater treatment and reuse, seawater desalination, etc.

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

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, sale and utilization of natural gas. It holds an important position in the global energy structure.

New energy refers to renewable energy that can be systematically exploited based on new technologies, including solar energy, wind energy, hydropower, biomass energy, geothermal energy, ocean energy, nuclear energy, etc.