Aijiren Technology micro insert suit for snap top vials-Aijiren Vial, Insert, 250UL manufacturer / supplier in China, offering 250UL Micro Insert with Mandrel Interior Conical Suits for ND9 Vials, 1.5ml 10-425 Vial Screw Neck HPLC Vial, 1.5ml 9mm Vial Screw Neck Sample