At one time use this product of aseptic vaginal expander to accord with YY0336-2002 standard requirement, the specification divides large medium and small three kinds. Product this adopt medical polystyrene mould plastics shaping is transparent nonpoisonous having irritated having amazing. This product adopts the plug-type structure, easy to use, regulate, expand flexibly, the edge is smooth, there is no powder, consider in an all-round way for the patient. Disposable use, packages in damaged condition, forbid using, ETO of ring is sterilized. It is aseptic, does not have and hot and original.