Glass Syringe, Prefilled Syringe, Injection Pen manufacturer / supplier in China, offering Reusable Insulin Pen for 3ml Cartridge OEM/ODM Factory Supply with CE ISO, Custom Refillable Insulin Injection Pen Manual Dial Compatible with U60insulin, OEM Service, Medical Reusable Insulin Pen Diabetes Management Ergonomic Design, Accurate Dosing, CE Certified and so on.