Explanatory notes
… comprise, inter alia, clays, siliceous materials including fused silica, materials with a high melting point, such as … in the body or superficially), decorated or glazed by using, as appropriate, specially prepared colours or …Legal note
… non-metallic materials which have been prepared and shaped previously at, in general, room temperature. Raw materials … comprise, inter alia, clays, siliceous materials including fused silica, materials with a high melting point, such as …