I would bet that if you actually look this product up, it is not UL or ETL listed. Chinese products can 100% lie about this on Amazon with no repercussions. They can stamp the product and the cord, but it doesn't mean anything.
I guarantee you this is not approved or tested by any entity. Buyer beware - but these products usually do work just fine.
EDIT: I did some legwork and searched the UL numbers they provided on the Amazon page. These are not for any EVSE, they are for random electrical components, some that may not even be in this EVSE.
Looked up the ETL number - "0 Results found"
So.... yeah. Seems like a scam, unless someone else knows more than me about these certifications and they're somehow legit. It looks like they just used random numbers on the product listing to fool everyone.