Take the jig with the left and right hands separately, press the upper part of the pressure with the thumb, and hold the Tray plate with the index finger and middle finger.
The right hand and the left hand were used to take the fixture respectively. The thumb finger was used to press the upper part of the fixture, and the index finger and middle finger were used to fasten the tray.<br>
Take the jig with the left hand and the right hand respectively, and press the top of the therapeutic pressure with your thumb, and buckle the Tray with your index finger and middle finger.