GST classification applies to vegetable-origin tanning extracts, excluding wattle, quebracho and chestnut extracts, under Schedule provisions. GST classification designates vegetable-origin tanning extracts, including tannins and their salts, ethers, esters and other derivatives, as taxable goods under the relevant schedule entry while expressly excluding Wattle extract, quebracho extract and chestnut extract, thereby fixing the schedule-based GST treatment for those listed goods.