I would say they mislead you (you have to be careful buying from china) you may want to find another use for them as returning them may be even harder then trying to get the right item in the first place.
the ones you are looking for will have a IC Chip on each section and should be called Digital Point Strips or some people call them Digital or Addressable Strips but if they don't have the chip you will only be able to control the whole strip at once
whatever model you choose make sure to get one that has a 6803 or 2801 chip type so you can control it with DMX (there are a few other chip types that will work as well but they are less common and you may have trouble finding decoders for them)
6803 diagram.pdf
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