Teflon coating:
At least 80% of non-stick pan coatings on the market are fluoride varnish, PTFE or silicone. Of course, you don't need to worry about its toxicity, as long as it is a regular brand of fluoride varnish, it is harmless. Fluoride varnish should not be used more than 260 degrees, which will destroy its stability. There is no need to worry about normal cooking. If the food reaches 200 degrees, it will have been burnt to coke.
Gold nano-coating:
Gold nano-coating is a kind of metal coating with very stable physical and chemical properties. Unlike Teflon, which is an organic material, it does not decompose and does not produce any substances harmful to human body, and can be used as a metal coating for liners such as bread makers.