产品参数/ Product parameter
由推杆、尾丝、胶棒和胶棒膜层组成。主要供临床妇产科宫腔诊查前的子宫颈扩张用，
It is composed of push rod, tail filament, rubber rod and film layer of rubber rod, which is mainly for clinical gynecology and obstetrics uterine cavity before examination of cervical dilatation.
