Adopting the direct vent system could emit smoke to outdoor, you can save the cost of the installation of pipeline integrity of the chimney.
采用把废气排到室外的水平排烟系统，您可节省安装完整烟囱管道的费用。
Adopting the direct vent system could emit smoke to outdoor, you can save the cost of the installation of pipeline integrity of the chimney.
采用把废气排到室外的水平排烟系统，您可节省安装完整烟囱管道的费用。
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