The first part of the official fee (the actual type and appearance refers to the application fee, and the invention refers to the application fee, the announcement fee and the actual examination fee) is mandatory, because if this part is not paid, the following links cannot be carried out at all, and it is impossible to know whether the application has been made.
The intermediary fee of formal intermediary is basically non-refundable. If the agent accepts private work or other circumstances, it shall be implemented in accordance with the contract.