PTFE/Silicone Septa, Hand Crimpers, Syringe Filters manufacturer / supplier in China, offering Economy 250UL Polymer Spring Micro Inserts IP250 for 9mm 2ml HPLC Vial, 1.5ml 10-425 Vial Screw Neck HPLC Vial Polymer Spring Micro Inserts IP250, 250UL Glass Conical Bottom Vial Insert for 2ml HPLC Vials and so on.