... boilers,for all kinds of dust gas The environment-friendly smoke removing and purifying tower is1. Suitable for all kinds of ... to use.2.Widely used in the control of lead smoke&dust and steam pollution from printing,battery,nonfer-rous metal ... poisonous and harmful gas,lampblack,acid mist,mercury vapor,lead,smoke,bitumen smoke,foul smell,etc can meet national emission standard. 5 ...