How much is the cleaning price of lampblack pipeline?

Is it just the pipes?

The oil smoke extraction equipment includes four parts: range hood, pipeline, purifier and fan. Some may not be equipped with a purifier, but fans are necessary. If there is a purifier, then clean the purifier and fan at the same time as cleaning the pipeline. In Changsha, our quotation is: range hood, pipeline 100 yuan about one meter; 400 yuan has a purifier and a fan.

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