GeM aims to enhance transparency, efficiency and speed in public procurement. It provides the tools of e-bidding, reverse e-auction and demand aggregation to facilitate the government users achieve the best value for their money.
How do I sell on GeM?
To sell on GeM, Register yourself on the GeM portal.
List your products under specific product categories.
Once an order is received, deliver the product to the Consignee duly entering its details on the portal.
Once an order is successfully delivered, Consignee shall inspect / test the product for its conformity with contract specifications and issue acceptance / rejection through on-line CRAC.
After CRAC, buyer will process the bill and forward to paying authority for time bound payments.
Read more on government website provided below.
Source GEM