1 Cellulose ethers for industrial purposes; Chemical additives for drilling muds; Chemical additives for oil well drilling fluids; Chemical additives for cement spacer; Chemical fracturing fluids for use in the oil and gas industry; Chemicals used in industry; Chemicals used in oil drilling; Chemicals for industrial purposes; Chemicals for use in industry; Concrete additives; Industrial chemicals; Polymers and polymeric additives for use in the manufacture of industrial products, consumer and household products, sealants, and automotive fluids; Polymers and polymeric additives for use in the manufacture of pharmaceutical preparations, plastics, cosmetics, personal care products, coatings, adhesives, and lubricants; Polymers, biopolymers, polymeric additives and biopolymeric additives for use in the manufacture of industrial products, consumer and household products, sealants or packaging; Specialty chemicals, namely, chemical additives for general industrial use in the manufacture of a wide variety of goods; Viscose (cellulose ester) chemicals