Clean work surface allows the installation of air duct save time and reduce trouble.

洁净的工作表面可使风管的安装节省时间并减少麻烦。

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Also particularly explains the superior characteristics, fabrication process and installation of the compound air duct, in addition, analyzes the economic feasibility of the substitute project.

详细讲解复合风管的优越性能、制作工艺及风管的安装，并以工程实例分析替代方案的经济可行性。

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Analyses glass-fiber board air duct, introduces its main technical characters, and briefly narrates its fabrication and installation.

全面分析复合玻纤板风管，介绍其主要技术性能指标，并简单叙述其制作和安装。

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