Hydraulic valves are widely used in various fields, including but not limited to the following aspects: 1. Industrial Field: hydraulic valve in industrial equipment plays a control of fluid pressure, flow, direction and temperature and other parameters of the role. Common applications include machine tools, metallurgical equipment, plastic machinery, paper machinery, petrochemical equipment. 2. Agricultural Field: hydraulic valve in agricultural machinery used to control the hydraulic system of agricultural machinery, such as tractors, harvesters, planters and so on. They can realize the automation and accurate control of hydraulic system and improve the efficiency and stability of agricultural machinery. 3. Construction engineering field: hydraulic valves used in construction control of various hydraulic equipment, such as cranes, concrete pump trucks, excavators and so on. Hydraulic valve can achieve the smooth operation of these equipment and accurate control, improve the safety and efficiency of the project. 4. Automotive industry: hydraulic valves are used in the automotive industry to control vehicle braking systems, suspension systems, steering systems and so on. Hydraulic valve can achieve the precise control of these systems, improve the safety and driving comfort of vehicles.