General refund position
Most Yunhu Networks LLC services are business-to-business, quote-based, and may involve reserved infrastructure resources, provisioning work, address allocation, deployment preparation, or third-party capacity commitments. Because of this, fees are generally non-refundable once the relevant resource, service window, or delivery work has been committed or activated, unless otherwise stated in the governing commercial documents.
If a refund, credit, or billing adjustment is available, it will normally be handled according to the specific order terms, invoice notes, contract language, or a documented service review outcome.