油研液压电液换向阀 DSHG-06-3C2-D24-N1-52,DSHG-06-3C2-A240-N1-52, DSHG-06-3C2-E-D24-N1-52,DSHG-06-3C2-E-A240-N1-52, DSHG-06-3C2-ET-D24-N1-52,DSHG-06-3C2-ET-A240-N1-52, DSHG-06-3C2-T-D24-N1-52,DSHG-06-3C2-T-A240-N1-52,