The full form of GST is Goods and Services Tax. It's a new way India collects taxes on goods and services. Before GST, there were many different taxes like Central Excise Duty and State VAT. GST replaced these to make things simpler. It's a tax that is added at each stage of production, but everyone except the final buyer gets their money back.
https://www.blacksuit.io/downl....oad-a-gst-certificat