1. When the goods are exported, the amount on the customs declaration form should be consistent with the settlement amount. If it is inconsistent, it may be for various reasons, or it may be a bank deduction. This is generally only a few tens of dollars, which does not affect the verification. The actual export value is very high, but in order to quickly release the customs declaration form, it does not affect the low declared amount. 500=2. Another possibility is that if your products need to be taxed, the declared amount will directly affect your tax amount. In order to avoid tax, the declared amount may be adjusted to the end, which is tax evasion, but this is the method adopted by many trading companies now. There is still a gap between the amount of foreign exchange collected and the actual amount, that is, bank deduction. Because the amount of foreign exchange collected is known by banks and safe, and the amount declared is counted by customs, there is opacity among them, so there are still inconsistencies. It is difficult for others to know another quantity. Unless you investigate your business one by one, it will be difficult for the three organizations to get accurate data.
3. I have seen CIF invoices before, which are generally value+freight+insurance. If there are many CIF, it is good to report the invoices directly. Customs declaration invoice You said proforma invoice. The invoice does not reflect the freight premium, so you need to fill in the freight premium on the customs declaration form. Generally, it must be lower than the value. Below the value of the goods, it can generally be understood that your goods value includes freight premium.
In general, when you refund the tax, you should pay attention to the system's recognition of FOB price, and then you will declare your customs value-insurance-freight with CIF.