If you're thinking of bringing products from another online store to BoxBuilder, it's essential to understand the process. BoxBuilder primarily relies on your existing Shopify inventory. Therefore, the key lies in how to import products from a different e-commerce store to Shopify.
To simplify the procedure, you can use CSV files, which allow you to transfer a bulk amount of product data swiftly. To guide you through this, Shopify has an informative article on importing products using CSV files. You can find the article here: https://help.shopify.com/en/manual/products/import-export/import-products
Additionally, if you need further assistance or if you prefer alternative methods, don't hesitate to contact Shopify support. They might have additional options or solutions to facilitate the product importation process.