At present, the price of a hard three-day box on the market is around 480 yuan. If you buy in large quantities, the price will definitely be favorable. Hard for three days can play the role of tonifying kidney and essence, but for friends with yin deficiency and fire flourishing, they should avoid taking such products. If male friends have chronic diseases such as high blood pressure or heart disease, they should also avoid taking them. If people take such products excessively for a long time, it may lead to excessive excitement and long-term dependence on them.