The preparation needs to "mix" the raw materials in some excipients or solvents to reach the required concentration, and can be finally provided to the target for use. Different forms of preparation solve the problem of drug usage and dosage, but also put forward higher requirements for safety. In order to keep the preparation uniform and stable, the effective ingredients meet the drug requirements, and control the potential risks, the process needs to be equipped with accurate filtration solutions to ensure the preparation compliance and safety, and meet the GMP requirements.