The main materials it sells include fire hydraulic giant, fire hose, indoor and outdoor fire hydrant, firebox 1211 and 302 fire extinguisher, etc.
它卖的主要材料包括：火液压巨头、灭火水龙带、消防水带、室内外消防栓、1211消防箱、和302灭火器等等。
The recommended location (as shown) is to connect the water regulator to the hydrant, and then run the hose to the trailer rig.
建议的安装位置(如图所示)是将水调节阀连接到消防栓上，然后再通过软管连接到拖车上。
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