1.even when there are some remanant blood and some solution, the uint can get
2.double super large LCD display, can display how deep the apex file has probed into
and digital display the distance from apex file to the apex at the same time, show the
length directly and clearly.
3.with sona alarm, remind timely, more humanized.
4.easy to operate, efficient, accurate, convenient, and without X-ray radiation.
6.hooker and the wire can be sterilized with high tempreture, avoid cross infection.