Microbial preparations, other than for medical use, namely, microbial cellulose and bacterial cellulose; cellulose and cellulose derivatives, namely, cellulose esters for industrial purposes, cellulose ethers for industrial purposes, acetate of cellulose, unprocessed carboxymethyl cellulose, and methylcellulose; cellulose pulp; cellulose esters for industrial purposes; cellulose ethers for industrial purposes; acetate of cellulose, unprocessed; carboxymethyl cellulose; methylcellulose; viscos...