4WE10D31B/OFCW220-50N9Z5L,华德型双向单向液压阀
PV2R1-23-F-LEA-40，PV2R1-23-F-LEB-40，
PV2R1-06-L-LAL-10,PV2R1-08-L-LAL-10,PV2R1-11-L-LAL-10,PV2R1-14-L-LAL-10,PV2R1-17-L-LAL-10,
无锡油研，PV2R1-25-L-LLA-10，PV2R1-25-L-LLB-10，
DG5S-H8-6C-2-VM-U1-H5-70 DG5V 7 2C M U H7 30 DG4V 3S 2C M U B5 60 DG4V 3S 2C M U B5 60
ZL15H-O4T.M6T ZL15H-Y4T.M6T
PV2R1-25-F-LAR-10，PV2R1-25-F-LAL-10，