PTFE/Silicone Septa, Hand Crimpers, Syringe Filters manufacturer / supplier in China, offering Glass Spring 250UL Vial Insert for 2ml HPLC Gc Vials, 250 UL Vial Insert Glass Spring Bottom for Gc Autosampler Vials IP250, 1.5ml 11mm Snap Ring Vial HPLC Vial Micro-Insert IV250 and so on.