Are there virtual credit cards in the US?
It's a service all our banks offer, some with Visa, others with Mastercard, depending on the bank. For a specific purchase, imagine $14, you go to your homebanking and ask for a virtual CC for that amount. They send your cell phone a code that you have to insert to confirm you really asked for that CC. After you insert the code (you have one minute to do that) they instantly create a virtual card with a number, the valididy of next month and a security code. This is what you give to aliexpress. That specific virtual card has implicit that the maximum amount drawn from your bank account will be $14.
If the card is not used in 24 hours, it will become invalid. And after it is used once it can not be used again, even for another purchase of the same amount.
That is what I use to purchase on aliexpress, so you wouldn't have a problem in sendind a copy to them because the virtual card is used for one and unique purchase. And you're the one who says the maximum amount that can be drawn daily with virtual credit cards (you can change the amount prior to a purchase that is expensive and change it back to a smaller amount after the purchase). It's very safe.
I hope you understood, my english is not so good.