... fertilizer equipment in China. Our main products are vertical dryer,rotary drum dryer, briquetting machine, curhser, etc. All of them are ISO9001 ... high thermal efficiency, fast drying speed. Small exist concentration, just for 10g/m3.Rely on gravity fall, no need power.It ... angles and different spacing design; and its strong adaptability, suitable for drying slag, clay and sand, coal, iron powder, ore ...