Remote fee DHL shipping cost add differend model fee extra fee

Description

Remote fee DHL shipping cost add differend model fee extra fee
(1) if your address is belong to remote area, you can use this link to add remote cost.
(2) if you choose wrong model, you want to change another model, but the price is different, then you can add the defferent cost via this link;
(3) if you choose freeshipping way, but you want to need faster shipping way and change it to DHL, you can use this link to add DHL shipping cost;
(4) othe condition which need to add extra cost;