GST rate amendments expand concessional treatment for renewable energy devices, ores, packing materials and specified medical inputs. Amendment revises GST schedules by inserting, substituting and omitting tariff entries to change tax treatment for selected goods, including distinct classification for bio-diesel supplies to Oil Marketing Companies versus other bio-diesel, addition of renewable energy devices and parts with an apportionment rule deeming a percentage of gross consideration as value of goods when bundled with certain taxable services, inclusion of multiple mineral ores and concentrates, plastic scrap, specified paper packing materials, certain pharmaceuticals, retrofit kits for disabled vehicles, and railway rolling-stock components; declares operative effective date.