You can directly add it into your previous order package that haven’t been sent out. 

The system will re-calculate the shipping cost of the total order package, and only extra shipping cost will be charged if necessary. 

After combining successfully, our staffs will send them together after all products finished.

1. Choose the new products you want add, then click “Buy All”.

2.  “Click to Combine”.

3. Choose the previous order package you want add new products into, then click “Confirm”.

4. Then the page shows as follows.

5. Click “Submit”, and the add succeeds!