... fields:1) The fume and smoke treatment and particle removing system in metallurgy plant, alloy plant, steel works, moulding factories, ... stations2) Fume filtration, tiny particle recycle and division of liquid and solid in aluminum electro analysis, tin, zinc, cooper ... burning, coal-feed boiler and liquidized laid boilers4) Division of liquid, solid and tiny particle recycle in chemicals, coke, carbon, ...