My company (magnesium oxide) light burning magnesium powder magnesite selection level, reflected by the light burning kiln, rotary kiln or fluidized bed furnace calcining and crushing, calcination uniform product, stable quality, high purity, activity, uniform particle size. Widely used in ventilation ducts, Firewood, lightweight partition board (quick drying), ceramic abrasive, magnesium sulfate, paper type, firecrackers solid lead like.