... % natural Density: 0.47 g/cm3 Diatomite filter aid---industrial grade1.Introduction:Product Name:DiatomiteFossil material: 100% ... Green Chemistry ,Environment1).Activated silica asphalt modifier 2).Filter aid: Food industry ,Wine industry,Chemicals,Industrial oil,Waste ... amorphous SiO2 as raw material, which through the professional processing. Our goods have following excellent characters: non-toxic, ...