They look like every other manufacturer's own cases. Way too thin and not very protective. People go aftermarket because they want more protection. That's what I'm looking for too.
I am using Xundd casing, it protected my mi 10 ultra from several drops. So far no damage to the glass or frame. I imported it from China using Taobao. But here's aliexpress link: https://tinyurl.com/y35cd6na