We are from China, since 1992 we manufacture phamaceutical packaging caps which directly touch the liquid medicine.We have five products:1. PP Joint for Plastic Infusion bag 2. PP Aluminum-plastic Cap for Plastic Infusion bag 3. Outer Cap of PP Sealing Cap for Plastic Irrigation Container 4. Inner Cap of PP Sealing Cap for Plastic Irrigation Container 5. Aluminum-plastic Cap Our cap can be used in plastic container for flush fluid bottle, in infusion bottle, in antibiotics, oral liquid.it is widely adopted by many pharmaceutical companys in China and around the world. Welcome for inquiry, we have best price and high quality. thanks!