DC series multiple directional control valves:The series of valves are of sheet structure and have various types of oil paths, complete functions, single or multiple pump oil supply, multi-stage pressure control and separation and confluence circuits; sliding valves can be extended at any end, and there are tongue-shaped and fork-shaped at the end. They have manual or hydraulic control as well as excellent micro-motion performance and a variety of sliding valve functions, and can meet the control requirements of users in 10 executive agencies.