Aijiren, the Prominent & Leading Manufacturer from China, Base Bonded 0.3ml Micro Vials, Screw Type, Crimp Type, Glass / Plastic; 150ul, 250ul, 300ul Glass Vial Inserts, with Spring, Conical Bottom, or Flat Bottom. 0.3ml 9mm Glass Screw Micro Vial Integrated with Insert Get Best Quote Request Callback