Create shipping charges based on category, manufacturer, product, and more! This extension uses an intuitive “rules” system to easily determine when your shipping charges appear. Restrict charges based on quantity, total, weight, volume, and other criteria, then combine multiple charge groups together into a single cost displayed to the customer.
Demo :
https://www.opencart.com/index.php?route=marketplace/extension/info&extension_id=2684
Demo :
https://www.opencart.com/index.php?route=marketplace/extension/info&extension_id=2684