Aijiren packaged 2ml HPLC Vial. First, PP Boxes were used for Vial packaging, and the Closures were packaged in plastic sealed bags, all of which were 100 pcs for 1 pack. After that, the carton is used for packaging. The firmness and rigidity of the carton protects the 2ml HPLC Vial from impact. As for why it is necessary to put another layer of plastic wrap on the outside, because there may be damp or flooded cabins during shipping, in order to prevent the carton from getting wet Protection by water.