Ensure that all recorded locations are clean with water, often check point water collection systems to ensure that the absolute position of the water around the water without the object, allowing the water to get the best.In this case, can not guarantee the drainage work that must be inspected pipeline system and the principle of freedom of information is placed in a horizontal position between these position information by checking the vertical cross axis system if there is a strange object or not be trapped there by the plug after the attention off information rules.Process information, you must ensure that the use of professional equipment in order not to affect the piping system.
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