It's an aliexpress "brand", which largely means, you'll never know who you talk to. If they ghost you via aliexpress, escalate to aliexpress. if you bought via their own website, unsure what recourse you have. Worth asking an LLM, maybe you can submit a formal complaint to the Chinese authorities, for example, could be simple enough (some countries do make that simple). Then you can threaten them with that, for example.
It's very easy to ignore emails from across the globe. You have to make it hard to ignore you. I stopped working with Winow because they started ghosting me, for example. A lot of these people are both lazy and shady, and suppliers with good reputation do matter a lot in comparison.
