The floor lamp works as expected. The wire inside seems to be too long, which made some trouble when installed. But it works once I tried to fold part of the wire. 
The manufacture told me that it would come with two boxes, but only one contains everything.  This was kind of confusion. I called customer service before opening up the box I received because I don't want to leave it open before I get everything. They asked me to open to box to see whether it had everything and it did.