Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES 38 MISCELLANEOUS CHEMICAL PRODUCTS 38 24 CONSISTING OF MIXTURES OF NATURAL PRODUCTS), NOT ELSEWHERE SPECIFIED 38 24 40 PREPARED ADDITIVES FOR CEMENTS, MORTARS OR CONCRETES Commodity Code Description 38 24 40 00 PREPARED ADDITIVES FOR CEMENTS, MORTARS OR CONCRETES