The Feiton black gold tachyon dpl I made at his house, the effect is particularly obvious now that I have used it twice. Their photonic products have quite a selection, ranging from cost-effective to high-end models. You can choose based on your own situation and budget. The doctor will not promote them, but will recommend the right one based on your skin condition. There is also the M22AOPT tachyon, which is called the seventh generation gold. Their equipment is also a major professional medical beauty brand, and it is made by certified professional doctors, and the service attitude is also good.