China Micro Insert Manufacturers, Suppliers, Company 250uL Conical Micro-Insert, 31*5.7mm, Suits for 9mm Vials 250uL Micro-Insert with Mandrel Interior, & Polymer Feet, 29*5.7mm, Suits for 9mm Vials 0.3mL Clear PP Short Screw Micro-Vial, 9mm Thread, 11.6*32mm