HSN Code 3407 refers to "Modelling pastes, incl. those put up for children's amusement; preparations known as 'dental wax' or as 'dental impression compounds', put up in sets, in packings for retail sale or in plates, horseshoe shapes, sticks or similar forms; other preparations for use in dentistry, with a basis of plaster 'of calcined gypsum or calcium sulphate'." This classification code is essential for identifying various modelling and dental products for import/export purposes based on their nature, composition, and intended use. Common products under HSN Code 3407 include children's modelling clay, dental wax, impression materials, and plaster-based dental preparations. Additionally, the GST rate for these items under this code supports accurate trade compliance.