Aijiren glass insert for 2ml amber vials-Aijiren HPLC Vials Micro Insert, 250UL Micro Insert, 200UL Micro Insert manufacturer / supplier in China, offering Aijiren 250UL 6mm Glass Vial Insert Flat Bottom for 2ml 9-425 Vials, 5ml Nasopharyngeal Vial Sampling Transport Tube, 5ml PP Self-Standing PP Viral Trnasport Leakproof Tube and so on.