Servicing & Cleaning of Exhaust Kitchen Hood, Fan and Ducting.

清除厨房烟罩， 风扇，厨房风喉的油迹。

From the concrete ducting the hot dirty flue gas enters the booster fan and then passes the inlet of the GGH.

从混凝土烟道来的热脏烟气通过升压风机，再通过热交换器入口进入热交换器。