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真钱扎金花app Why do lampposts need to be galvanized? You know what? In fact, it is very simple, because the street lamp is in the outdoor environment for a long time, in order to prevent the Lamp Pole Pole Pole not easy to be corroded. The purpose of cold galvanizing and hot galvanizing is to prevent corrosion and prolong the life of lamp, but hot galvanizing is more effective than cold galvanizing.

 

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