We have been asking for PTT’s customs broker contact, because we were asked to return this cargo with the duty or tax being refunded. The import duty or tax were handled by PTT custom broker when the import shipment was declared into Thailand. We will need to use the same customs broker to do the declaration for return and this customs broker will have the authorization to declare the return and will make sure to declare the export in the proper way so that duty or tax earlier paid during import will be refunded after the return export . Addivant will pay all the customs broker handling but the customs broker will be the only party responsible for the duty / tax refund. I hope the above help explain why we need to work directly with the customs broker