I bought a couple of those cheap Chinese microphones a short while ago, just for the bodies.
About everything on them is crap!
The bodies are made of aluminium, the thread for the bottom ring wears very quickly.
The (SMD) electronics are noisy as hell and the capsule is a (small) cheap electret.
The microphones sound like you are speaking with a bucket over your head!...
I put some real capsules in them and replaced the electronics completely.
Now I can use them!