They only need a large grain of gold, and they only see this kind of good choice in their eyes. They can't see this kind of detail in their eyes. In addition, there is no way to get a good recovery rate with local technology and equipment. In addition, these regions are rich in mineral resources, so they no longer mine these high-content tailings. However, it is possible to use our equipment for this gold, and the recovery rate is very high using this kind of tailings equipment, and the automatic equipment for this kind of sand gold tailings. And now the new devices are all fully automatic. The old mineral content of the water jacket centrifuge 02 is generally relatively high, and the value is relatively high, and the mining cost of this kind of mine is relatively low. Because the price of obtaining mining rights is much lower than that of raw ore, some local miners don't even want money and participate in the sharing. Especially in regions such as Kazakhstan and Tajikistan, this kind of tailings can also be washed and sold after gold is selected. Selling sand to a mixing plant for the manufacture of concrete has yielded very high benefits. There are many mining methods in one stroke that make use of worthless tailings. The cost of obtaining tailings is low, but the mining benefits obtained are high.