Section 05 Mineral products 25 Salt, sulphur; earths and stone; plastering materials, lime and cement 25 30 Mineral substances not elsewhere specified or included 25 30 20 - Kieserite, epsomite (natural magnesium sulphates) Commodity Code Description 25 30 20 00 - Kieserite, epsomite (natural magnesium sulphates)