The original imported instruments are not very effective, not to mention the domestic ones. Yulishu needs a course of treatment. Generally, doing it more than three times is a course of treatment, which only has immediate effect and no effect in the later stage. Only for large areas of abdomen, butterfly sleeve, meat worship, back, waist, inner and outer thighs, calves and other parts can not be done, even if it is done, it will have no effect. Only FDA safety certification, no effective FDA certification.