Microfiltration primarily involves the following fields: pharmaceutical industry, food industry (gelatin, wine, spirits, fruit juice, milk, etc.), high-purity water, municipal sewage, industrial wastewater, drinking water, biotechnology, and bio-fermentation.
Ultrafiltration was initially used in industrial ultrafiltration for wastewater and sewage treatment. Over the past thirty years, with the development of ultrafiltration technology, it has now been applied to numerous fields including food processing, beverage industry, pharmaceutical industry, biological agents, traditional Chinese medicine preparations, clinical medicine, dyeing and printing wastewater treatment, food industry wastewater treatment, resource recovery, and environmental engineering.

Nanofiltration's main applications include: food industry, deep processing of plants, beverage industry, deep processing of agricultural products, biopharmaceuticals, bio-fermentation, fine chemicals, and environmental protection industry.
Reverse osmosis (RO) is widely used in various sectors of the national economy due to its advanced, efficient, and energy-saving characteristics. It is primarily applied in water treatment and the concentration of heat-sensitive substances. Major application areas include: food industry, dairy industry, beverage industry, deep processing of plant (agricultural products), biopharmaceuticals, bio-fermentation, preparation of drinking water, pure water, ultrapure water, seawater, brackish water desalination, power, electronics, semiconductor industry water, pharmaceutical process water, pharmaceutical preparation water, water for injection, sterile and pyrogen-free pure water, food and beverage industry, chemical and other industrial process water, boiler water, washing water, and cooling water.
Others: In addition to the four commonly used membrane separation processes mentioned above, there are also dialysis, controlled release, membrane sensors, membrane gas separation, and liquid membrane separation methods.

