Advice needed for an ecommerce store in drop-shipping model.

Hello Respected CAs, I am launching an ecommerce store which works on the Dropshipping model. A few points: - I don't manufacture anything, I just provide a website for people to place orders - Supplier is based in China - Customers are from across the globe (except India, not a single item will be sold in India) Here is how the order process works: 1. A customer visits my site and places order for a product (let's say an LED light). 2. Payment is processed in USD (US Dollars) on my website. 3. The order is placed in the backend automatically with the Chinese company for a lower amount (I keep the difference as profit). 4. Chinese company sends the item directly to customer. Now, I need your help to understand the Tax implications of this model. I guess I would need to pay income tax as I am earning something in India. Can i register Sole proprietor using MSME udyogaadhaar and can i use my own pan card to register GST,and nothing is manufactured or sold in India, do I need to pay GST or any other taxes? And any other legal registration i need (VAT,professional tax) I would highly appreciate if you could provide an insight into this. Thanks and Regards, Rohan Patil