Keep the change. The technology is worse every time. I heard that they often learn the technology, and they don't make much progress. Especially, the products with the worst purchase price of 2% or 2% for beauty still charge the most expensive price, and the equipment has no effect at all. The purchase price of the equipment is only 3, yuan, and tens of thousands of people have a black heart when they do it once. They only do group buying to attract you to spend money and then apply for a card. The first service is very good, and the second time is not a person.