The heat source of the chafing dish is changed, and the coal gas of civil pipelines and the liquefied petroleum gas are taken as fuel.
它主要是改变火锅的热源，以民用管道煤气和石油液化气作为燃料。
The heat source of the chafing dish is changed, and the coal gas of civil pipelines and the liquefied petroleum gas are taken as fuel.
它主要是改变火锅的热源，以民用管道煤气和石油液化气作为燃料。
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