Cellulase is completely soluble in water, but it is there will be precipitation phenomena during the experiment, and this is why? In fact, the industrial production of enzymes are present on the carrier, in most cases because sometimes precipitated water-insoluble carrier caused by the enzyme solution appears. And we Xia Sheng Group, which produces cellulase carrier is sodium carboxymethylcellulose, soluble salts, so I produced cellulase is completely soluble.