Don't worry, I have bought back Li Jiakang brand health care products countless times, and the quality of each product is guaranteed, and I will never step on thunder. It is said that all products in Li Jiakang are made by pharmaceutical-grade factories, and the safety standards and procedures of products are consistent all over the world? The final testing of all products before going on the market is completed at the US headquarters and third-party professional organizations. Products go through many procedures from the source to the terminal, and the quality is strictly controlled, so I personally think that Li Jiakang is very reliable, which is why I have been buying back.