石蜡推进元件,经PTC加热驱动 运行状态指示、无噪音、免维护 360°安装方式,安装简单方便 采用阀门适配器与阀门完美结合
Paraffin propulsion component, driven by PTC heating Operating status indication, no noise, maintenance free 360 ° installation method, easy and convenient to install Perfect combination of valve adapter and valve
