Currently the shopping cart can only be used when purchasing ready-to-ship products. Once you have found a ready-to-ship item you would like to purchase:
Step1. Enter the quantity you would like and click "Add to Cart".
Step2. Go to the shopping cart and click "proceed with this supplier" to place your order. If you have added multiple products from different suppliers, you will need to click "proceed with this supplier" for each supplier.
For more methods to place a Trade Assurance order, please check from here.