Nanchang Aibeisi Plastic Surgery Hospital, the principle of microcrystal grinding technology is that tiny alumina polygonal crystals (referred to as microcrystals) impact on the uneven skin scar surface under the guidance of a vacuum closed system to achieve the effect of smoothing the scar by friction. Because microcrystalline particles are fine, they can act on the skin surface evenly. When they rub against scars and other tissues, their surfaces can be bonded with worn tissue fragments and tissue fluid, which makes the original edges and corners of the crystals dim and the skin smooth. At the same time, microcrystalline grinding can also stimulate blood and lymphatic circulation, accelerate tissue metabolism, promote pigment absorption, collagen and elastic fiber regeneration, and accelerate skin recovery.