Foreign countries often talk about export tax rebate. In fact, our export tax rebate is lower than that of foreign countries, and there are also export tax rebates abroad. It is said that European exports are not taxed; However, in China, it is a "first sign and retreat", often (mostly products) cross 17 and retreat 15.
As for export tax fraud, you know the process of tax refund, and it is easy to imagine:
At the time of export declaration, the customs records the amount of foreign exchange receivable (declaration form and verification form), and the bank issues a certificate of the amount of recovered foreign exchange (memo). The export company takes the water bill, customs declaration form and verification form to the safe for verification, and then goes to the tax bureau for tax refund.