Another type of drop shipping product resource is print on demand. Printful makes it easy to sell printed products on Shopify such as t-shirts, sweatshirts, tank tops, canvases, posters, ...After you install Printful app, you need to choose the type of product, upload your design and publish them to your Shopify drop shipping store. When a customer places an order, it will be automatically sent to Printful so they will print the product using your design and ship it to your customer.