1. Pharmaceutical Industry: During the pharmaceutical manufacturing process, drugs need to be dried or freeze-dried, requiring vacuum pumps to extract gases and vapors. Vacuum pumps are also used for sealing and transfer operations within pharmaceutical equipment.
2. Chemical Industry: During chemical manufacturing, various liquids need to be extracted and distilled, requiring vacuum pumps. Vacuum pumps are also often used in the chemical industry to extract industrial waste gas for environmental protection.
3. Food Processing: During food processing, vacuum pumps are primarily used to extract gases and moisture from food, preventing spoilage caused by excessive intake of gases.
4. Aerospace Industry: During aerospace manufacturing, air leak testing is required, requiring vacuum pumps to evacuate the chamber.