To calculate the charges related to a 1.68 cubic meter (cbm) shipment, I would need more specific information about the following:

1. Shipping Method: Are you shipping by air, sea, or land?
2. Destination: Where is the shipment going? Different locations may have different rates.
3. Weight: What is the weight of the shipment? Shipping costs can depend on both weight and volume.
4. Type of Goods: Are there any special handling requirements for the goods being shipped?
5. Carrier: Do you have a specific carrier in mind, or do you want to compare multiple options?
6. Insurance: Do you want to include insurance for the shipment?

Once I have this information, I can help you estimate the charges.