From a technical perspective, China's "National VI B (China VI-b)" is one of the strictest emission standards globally, with limits on carbon monoxide, nitrogen oxides, and particulate matter that are even stricter than some of Europe's Euro VI standards. However, the two are not legally recognized by each other, depending on your country's import regulations.

Absolutely not. Exporting used cars requires clear proof of foreign currency receipts in USD/EUR (water bill) to be provided to the Chinese foreign exchange administration, customs, and tax authorities for document verification. Cryptocurrencies are considered illegal settlement channels.

No, it is absolutely impossible to get a refund. Not only will there be no refund, but if the proceeds from the port auction of the abandoned cargo are insufficient to cover the exorbitant demurrage and disposal fees, the shipping company and customs will still pursue you (the bill of lading recipient) for the remaining debt through international legal proceedings.