I consider buying one, but it's Chinese.
I consider buying one
from where?
I use my common sense. I would never get underneath a product bought directly from China online.
If it's sold locally in a major store, then that means other people have bought it, and the store stakes their reputation on it.
A local Chinese seller.
can you be specific?
A local store owned by a Chinese.
Perhaps he imported it straight from China also...
It is a brandless ramp.
do you really need more comment?
Since it’s an unknown product from an unknown source, no one can reassure you confidently. Given that you are nervous, just take a pass. Find an alternative you have confidence in.
There are U.S. made ramps available if you shop around, like this company (though these are not metal):
https://www.raceramps.com/blog/lifestyle/premium-american-made-usa-car-ramp-solutions/b/rrls23/
