PTFE/Silicone Septa, Hand Crimpers, Syringe Filters manufacturer / supplier in China, offering 30ml EPA Toc Amber Sample Storage Vials, 20-60ml 24-400 Vial Screw 30ml Amber Toc Vial V3027g, 20-60ml 24-400 Vial Screw 20ml Toc Clear Vial V2017g and so on.