Yes, they are the ones. They've been available in HK since at least 2017 when I was renovating. I've also seen them IRL (in a gym, so quite hard to assess how effective they were- they really are not designed for spaces like that).
That said, I have never come across any retailer that caries them. Which is not surprising given how weird they look, and that they are not cheap tacky garbage which is what the market is skewed towards.