Section 05 Mineral products 25 Salt; sulphur; earths and stone; plastering materials, lime and cement 25 20 Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium sulphate) whether or not coloured, with or without small quantities of accelerators or retarders. Commodity Code Description 25 20 10 Gypsum; anhydrite 25 20 20 Plasters