Dai Yu FE668 comments

The installation master is very amateur, he never installed it, and the poles were reversed

It works very well. Now it's sunny, but it doesn't work very well. Let's have a good feel when it's ready.

After a few days of trial run, the machine sounds very low, very stable, easy to operate, and has a good experience.

The after-sales service really took a long time because of the strange noise in the early stage. But after continuous communication, I finally solved this problem by video with the engineer. I think this is also a good way to solve problems.

Surprisingly good, because the ellipsometer in the gym before is particularly good, so I think the general ellipsometer is not good. That is, the body floats up and down very much. But this ellipsometer is really amazing to me, and the price is absolutely reasonable! You can buy with confidence. Now there are only two kinds of things that can be evaluated, one is extremely poor, the other is extremely good. Just so, this comment is particularly good

It is very quiet to use, which is incomparable with treadmill. The sound quality of the built-in speaker of the machine is excellent!