PTT encryption technology is a patented technology developed by Kefayuan for encryption surgery. Its main feature is that the stitches can be inserted without damaging other hair, and can achieve a very dense effect. The general domestic transplantation equipment is not perfect for hair encryption. The number of transplants at one time is not very large, and the roughness of the equipment causes damage to other hair follicles. Kefayuan's PTT encryption technology overcomes this shortcoming.