Good plating appearance must be completed after many strict processes. The brighter, the better.
Turn the handle: There is no big gap between LED faucet and handle, you can't feel too much resistance when you turning the handle.
It is hard to distinguish LED faucet material. It sounds not clear when you knocking a good quality LED faucet; if it sounds very clear, the material should be stainless steel.
You can choose regular brands, and pay attention to the brand logo. Inferior quality LED faucet just has paper label even no any mark.