优质电动机YDFW-312-4 阀门专用阀门电动装置专用电机ydf-wf-212-4，ydf-wf-221-4，ydf-wf-222-4，ydf-wf-231-4，ydf-wf-311-4，ydf-wf-312-4，ydf-wf-321-4，ydf-wf-322-4，ydf-wf-411-4，ydf-wf-421-4，ydf-wf-422-4等各种型号电机。有0.18kw，0.25kw，0.37kw，0.55kw，0.75kw，1.1kw，1.5kw，2.2kw，