PTFE/Silicone Septa, Hand Crimpers, Syringe Filters manufacturer / supplier in China, offering 9mm Black Screw Neck Closed Top Sample Vial Caps Sc94491, 2ml 9mm Vial Blue Screw Neck Sample Vial Caps Sc94491, 9mm Black Short Screw PP Cap with PTFE/ Silicone Septa for HPLC Vials SC9194 and so on.