What can he do if he doesn't place an order and you don't reduce the price? After all, it is their unilateral opinion after completing the contract.

The opinions of SAFE and Customs are well-founded and tenable. Every trader has made such changes, not to mention the losses caused to the national tax revenue, and the workload has doubled. So even if the policy is allowed to be modified, it will be strictly controlled. Simply put, it's hard to tell whether you are real or not.

The exception is that you are familiar with the Commissioner of the export customs area, so let them bend the rules, because sensitive terms are involved, and such changes must be approved by the Commissioner.