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CKD空壓閥，在需要緊急停止時的瞬間停止保持時，其功能無法達到機械式，電氣事額、和油壓式同等的效果。

4F550-15型喜開理電磁閥：日本*，日本喜開理4系列電磁閥，實用性強，適用范圍廣

4F710-25-DC24V
4F440-10-AC200V
4F510-15-B-AC200V
4F310-10-P1-AC220V
4F510-10-LP-DC24V
4F310-08-AC110V
4F310-10-DC24V
4F630-15-AC200V
4F110-08-AC200V
4F510-15-B-AC200V
4F620-15-AC200V
4F210-08-AC100V
4F310-10-M3-AC100V
4F520-15-AC200V
4F730-25-M3P-DC24V
4F720-25-M3P-AC200V
4F510-15-B-AC200V
4F510-15-AC200V
4F310-08-AC100V
4F620-15-L-DC24V
4F210-08-AC200V
4F120-08-DC24V
4F630-15-AC200V
4F210-08-AC200V
4F719-00-BL-AC200V 
4F510-15-E1-AC200V
4F510-15-E2-AC200V
4F510-15-B1-AC200V
4F510-15-B-AC200V
4F510-15-BL-AC200V
4F510-15-G-AC200V
4F220-08-G-AC200V
4F520-15-AC200V
4F510-15-GL-AC200V
4F530-15-AC200V
4F410-10-AC200V
4F110-08-AC100V
4F720-25-AC200V
4F230-08-DC24V
4F510-15-M3L-AC100V
4F410-10-AC200V 
4F719-00-BL-DC24V 
4F719-00-BL-AC220V 
4F719-00-L-AC220V
4F719-00-L-DC24V
4F719-00-L-AC200V
4F310-10-AC200V
4F210-08-AC100V
4F310-10-B-AC200V 
4F510-15-M3L-AC100V
4F510-15-B-AC200V
4F310-10-B-AC200V
4F510-10-AC200V
4F510-15-F-AC200V 
4F510-15-E-AC200V  
4F420-10-AC200V
4F430-08-AC200V
4F510-15-AC200V
4F729-00-AC200V
4F410-10-AC200V
4F510-10-AC200V
4F510-15-AC200V
4F510-15-AC200V
4F620-15-DC24V
4F710-25-DC24V
4F510-15-AC200V  
4F310-08-DC24V
4F520-15-AC200V
4F510-15-AC200V 
4F510-15-L-AC200V
4F719-00-AC200V
4F310-10-AC200V
4F510-15-AC200V
4F110-08-AC100V
4F310-10-AC200V 

4F550-15，CKD電磁閥，喜開理4F電磁閥