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The top-firing air and gas self-preheating hot blast stove adopts a patented burner and high blast temperature bypass flue. 頂燃式空氣、 煤氣自身雙預熱熱風爐採用了頂燃式燃燒器熱風爐專利的燃燒器技術和高溫旁通菸道技術。