Gaoyu designs and manufactures a complete range of valve modules for mobile machinery with special operational requirements, e.g. check valve, quick drop valve, regulating valve, crushing hammer hydraulic valve, lift platform control valve and hitch control valve. Special functional valve modules are integratable modules designed for combination with standard components. If you are looking for hydraulic valves with special functions, you can count on Gaoyu to provide you with hydraulic valve modules with perfect performance and durability.