I think the mistake you perhaps made was buying "Peanut Cooking Oil". I don't know the food description legislation where you are, but that sounds suspiciously like a get-around. They seem to be selling cheaper oils flavoured with peanuts, as opposed to the 100% peanut oil, which I am happy to see you have now found.
I don't recall coming across anything like the oil you described here in China, though I wouldn't be surprised if it exists.
At the same time, while I'm here, I recommend Rice Bran Oil for Chinese cooking.