Design a UI for Inventory Manager to add a product. The UI should capture the product information like product name,product description,product features ,productprice and VAT %. The UI should also provide a drop down option to choose a retailer ID (all existing retailer's Ids should be populated in the dropdown). This is an optional requirement.The UI should also allow the manager to add quantity of products available.

The page should allow accepting input easily using keyboard as well.
Indicate mandatory fields on the page / screen.