HSN code HSN description GST 2520 Gypsum; Anhydrite; Plasters (Consisting Of Calcined Gypsum Or Calcium Sulphate) Whether Or Not Coloured, With Or Without Small Uantities Of Accelerators Or Retarders 5% 252010 Gypsum; Anhydrite 5% 25201010 Gypsum; Anhydrite; Plasters (Consisting Of Calcined Gypsum Or Calcium Sulphate) Whether Or Not Coloured, With Or Without Small Quantities Of…