PTFE/Silicone Septa, Hand Crimpers, Syringe Filters manufacturer / supplier in China, offering 8mm 2ml HPLC Gc Autosampler Vials 8-425, 8-425 Amber 2ml Screw Neck HPLC Vial with Writing Mark, 150UL 250UL 300UL 2ml 9mm Vial Screw Neck Vial ND9 Micro-Insert and so on.