管、伸缩器等．使运行安全可靠．安装维修方便.
GFJH-DN2400,GFJH-DN2600,GFJH-DN2800,GFJH-DN3000,GFJH-DN3200,GFJH-DN3400,GFJH-DN3600,GFJH-DN3800,GFJH-DN4000,GFJH-DN4200,GFJH-DN4400,无锡昌林，GFJH-DN4600,GFJH-DN4800，GFJH-DN5000,GFJH-DN5200,GFJH-DN5400,GFJH-DN5600,GFJH-DN5800,GFJH-DN6000,GFJH-DN6200,GFJH-DN6400,GFJH-DN6600,GFJH-DN6800,GFJH-DN7000,GFJH-DN7200,GFJH-DN7400,GFJH-DN7600,GFJH-DN7800,GFJH-DN8000,GFJH-DN8200,GFJH-DN8400，GFJH-DN8600，GFJH-DN8800，GFJH-DN90