You need to pay attention to the following points when you use the 3D-NLS:

1.According to the right steps to turn up/down the machine 2.Should not eat,drink wine and coffee , smoke,not eat health products and try not to take medicine two to three hours before testing .

2.Remove the metal articles and communication equipment on the body before testing;or use tissue cover the metal things so to keep the skin don’t touch the metal things during test .

3.Relax the feeling, not speak and keep steady breathing during testing.Do not sits cross-legged .

4.Women who are Menstrual period or pregnant and children who are under 10 years old don’t suggested to test .

5.The line for the earphone should place in the left , and put the earphone tightly .

6.If the testor who removaled the organ or placed something metal into the body , should tell at first.

7.Avoid the direct light when test .