TheLiquid-infusion Composite Stopper for IV Bagis produced in the clean plant, with the partial part reaching to Class 100 under the Class 10, 000 background. The main working procedures, such as the injection molding, inspection and cleaning, and assembly and etc., are designed and processed as per the cleanliness requirements at the partial level of Class 100, which passes the GMP onsite certification and complies with the cleanliness requirements of high capacity injection medicine. The medicineloading stopper is based on the polycarbonate joint formed by injection molding process, comprising of the injectionpurpose halogenated butyl rubber stopper and outer cap. Among which, the material for polycarbonate joint is the imported medicallevel polycarbonate, complying with the FDA rules; the injectionpurpose halogenated butyl rubber stopper can be chosen to use the wellknown domestic product or imported product on the request of user.