






Q: Any precautions for use
A: 1. When testing is needed, it is necessary to sit down, keep the body stationary, take a deep breath, and then conduct the test;
2. Keep fingers clean and nails should not be too long;
3. Avoid excessive sweat.








Q: Any precautions for use
A: 1. When testing is needed, it is necessary to sit down, keep the body stationary, take a deep breath, and then conduct the test;
2. Keep fingers clean and nails should not be too long;
3. Avoid excessive sweat.
























