燃气压力开关/空气压力开关,德国DUNGS冬斯燃气压力开关：GW3A5，GW10A5，GW50A5，GW150A5，GW500A5，GW3A6，GW50A6，GW150A6，GW500A6,德国DUNGS冬斯空气压力开关：LGW3A2，LGW10A2，LGW50A2，LGW150A2，LGW3A2P，LGW10A2P，LGW50A2P，LGW150A2P，LGW3A4，LGW10A4，LGW50A4，LGW150A4)