They're quick to get something done, that much is certain.
The problems you run into is when a Chinese company tries to break out on it's own, without playing ball with regional players. A fair chunk of the above examples directly involve large, international investments and contracts.
They get front-line access to top binned materials, government breaks, subsidies, and other aid. Labor is shoved in their direction, and factory cities displace subsistence farming to ensure the supply. Much is overlooked in the name of productivity.
The guys just trying to innovate on their own get the dregs, and IP is forced to be passed back and forth (rather like a US defense procurement operation), and they end up supplying those larger entities in droves; betting on that last penny. It's one of the reasons they don't worry too much about who actually owns IP.
It's not that they are incapable of great work. They exist in an environment that prevents them from reaching their manufacturing potential. Here, you can just buy the good stuff. It's not the case over there, once you step just outside the shiny parts of the cities supported by investment.
If they're not on the good list, they are playing 14th fiddle to the people who are. If I own a shop, and you own a shop, we can both order NAPA parts.
There, if I own a small shop, and you own a shop that was founded in part by regional government, in part by manufacturing alliances, and in part by foreign investors, you're getting the NAPA parts, and now it's my job to replicate them, whether I like it or not. I won't get the same backup, and that's a very big deal.
It's easy to look at a large operations making auto, electronic, or aviation parts for foreign companies and think everything is fine, and they can all beat the game and make the good stuff. That's just not the case, though.
Without that support, their environment just plain bolts a quality ceiling over their head, and they have little choice but to play the same game of ball with a broken bat, if they want access to all those manufacturing, import, and export benefits.