1) high quality material, meet the standard of USP and EP 2) usde for pharmaceutical,liquid medicine 3) sterile,clear,stable. 1)1-50ml glass tubing vial. 2)Raw material is high quality neutral glass tubing. 3)Advanced production process. 4)Vial with or no blow back edge. 5)Special producing process for special lyophilizationproducts : All kinds of screw vials (ISO ,DIN,GPI screw vial ). Filing ...