Fulfillment by Amazon (FBA) is a service that allows businesses to outsource order fulfillment to Amazon. Businesses send products to Amazon fulfillment centers
when a customer makes a purchase, Amazon pick, pack and ship the order. Amazon can also provide customer service and process returns for those orders.
In India there was 44 Amazon Fulfillment Center and 71 Multi Seller Flex Center in the 23 State. You can use this Amazon FC to fulfill your order and sell your product in Pan India.