In order to eliminate the deformation heat generated during cold rolling of strip steel, iron and steel enterprises need to use emulsion or palm oil for cooling and lubrication. The cold rolling process is to use emulsion for cooling and lubrication during rolling.

Ceramic membrane is mainly used in a wide range in the early 20th century. It is a membrane element made of inorganic ceramic materials. It has high separation efficiency, stable effect, good chemical stability, acid and alkali resistance, organic solvent resistance, bacterial resistance, high mechanical strength, good regeneration performance, simple separation process, low energy consumption and other performance advantages, and is widely used in food processing industry, bioengineering, petrochemical industry, metal smelting and other industries.

The membrane industry has played an irreplaceable supporting role in solving water resource shortage, air and water environment pollution, developing new energy industry, especially through process industry reengineering, improving energy and resource utilization, and reducing environmental pollutant emissions. In many years of exploration and practice, membrane technology is also constantly repairing new problems, solving new challenges, and achieving breakthroughs and innovations.

Alkali refining plays an important role in the oil refining process. At present, China's oil and fat plants mostly adopt two production methods: intermittent and continuous. First it needs to neutralize the free fatty acids in the oil with alkali to produce soap feet, and then absorb some other impurities and centrifuge the oil to refine the crude oil.

It is the goal of water supply people to make people drink clean water, safe water and healthy water (high-quality water and direct drinking water). At present, membrane water treatment is an effective way to improve the conventional water treatment process.