The extension includes fittings and extension pipe with handwheel mounted.
加长件包括连接件和加长管件，带手轮安装。
The plastic extension pipe with a joint coupling body can bring convenience for the installation of a ventilator, a range hood, a water heater, etc.
在安装通风装置、脱排油烟机、热水器等时，使用这种带接头联体的塑料伸缩管在许多方便之处。
The coil pipe of the condenser also has the advantages of difficult damage and extension of the service life of the device.
这种冷凝器盘管还具有不易损坏，能延长设备使用寿命的优点。
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