Xiaomi is another one, their build quality is good and they make a whole bunch of actually useful non "tech" things like escooters, air filters, vaccuums. I don't know if they're shady with finances or data collection though
One financial analysis of Xiaomi I read (it's in Korean, I couldn't find anything in English) is that it is in part a lending company funded by float from manufacturing partners. Xiaomi has a personal loan product which grew by 100x in two years to ~1 billion. Liquidity comes from delay between retail sale to partner payment.
Since when scooters, air filters, and vacuums turned "not a tech?"