| Operation Steps：
1. Put the test product on the center of vibrostand, open the nuts on the crate;
2. Move the product parallel by hands and clamp it, screw tightly;
3. Turn on the power switch, adjust the timer (00M00/min, 00H00/h);
4. Turn on the start switch, adjust the vibration speed (note: the min. speed shall not less than 100 rev, the max. Speed shall not less than 250 rev.
5.Test closure and turn off the power.