How many treatment head of our HIFU machine?

There are Three treatment head of our HIFU machine, one is 4.5mm, another is 3.0mm
Three treatment head function level is not same,4.5 mm treatment head could effect to the fascia layer,
3.0mm the treatment head is effect to the epidermis and the dermis.

The combination of the two treatment head can do a full range of lifting tightening.