二位五通双电控低功率换向阀（中泄式） DF3Y5D2-L4R,DF3Y5D2-L4RD,DF3Y5D2-L6R,DF3Y5D2-L6RD,DF3Y5D2-L8aR,DF3Y5D2-L8aRD
DF3Y5D2-B4DWD,DF3Y5D2-B6DW,DF3Y5D2-B6DWD
DF3Y5D2-B8aDW,DF3Y5D2-B8aDWD,DF3Y5D2-B8DW,DF3Y5D2-B8DWD,DF3Y5D2-B10DW,DF3Y5D2-B10DWD

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