GST on magnesium compounds classified under Schedule 1 as taxable goods at a reduced rate for the stated period. GST at a reduced rate applies to specified magnesium compounds listed in Schedule 1, including natural magnesium carbonate (magnesite), fused magnesia, dead-burned (sintered) magnesia with minor oxide additions before sintering, and other magnesium oxides whether pure or not, treating these substances as taxable goods under the schedule.