SIL3认证本安防爆电磁阀BDV510C3进口本安线圈EXiaIICT6无锡BD 面议 Flameproof Solenoid Coil防爆电磁阀ALVC5-024换向CT6/aphe 面议 BDV511C5-24VDC隔爆电磁阀侧出线Flameproof Solenoid Coil BD 面议 SIL3认证Flameproof Solenoid Coil隔爆电磁阀BDV510C5万能型BD 面议 ALS-400M4阀门限位开LIMIT SWITCH BOX SIL3认证CT6隔爆APHE 面议 LIMIT SWITCH BOX隔爆ALS-500M4四个开关SIL3安全认证Aphe 面议