Re: ce and ul listings
UL is for the US (In some cases also Canada)
CE is for Europe (Centered on the EU, but some other countries also use accept it.)
The UL listing is based on testing to UL standards, while the CE marking is the manufacturers promise that the product conforms to European standards.
In the US, you can ignore the CE marking. It doesn't mean the product is suitable for use in the US. And in Europe you can ignore the UL listing.