Green mining, rational use of resources, has become an important issue in the mining industry. Three filter products, hydraulic oil and lubricating oil filters of construction machinery and equipment are inseparable from the key application of filtration. The mine area water can be recycled after deep filtration treatment, which can not only meet the production water, but also meet the needs of some domestic water. Hangzhou Dali has accumulated sufficient experience in filtration to provide high-quality and reliable products for mining customers.