refers to liquids directly administered via intravenous drip. In China, water injections and infusions are generally produced using sterilization processes. The most core technology in the production of water injections and infusions is the liquid preparation process, meaning the key system is the liquid preparation system. The water injection and infusion liquid preparation system refers to the needle liquid preparation tanks, concentrated preparation tanks, dilute preparation tanks, filtration and sterilization systems, etc. used in the pharmaceutical industry. It belongs to the pharmaceutical sanitary-grade liquid preparation system and complies with pharmaceutical GMP standards.