电感式接近开关,E48-D20NK,E48-D20NH,E48-D20NT,E48-D20PK,E48-D20PH,E48-D20PT E48-D20NK,E48-D20NH,E48-D20NT,E48-D20PK,E48-D20PH, 无锡市昌林自动化科技有限公司