Weilisi is a Chinese electronics company which builds and / or sells PA equipment, amplifiers and, you got it: microphones. Mostly wireless, of course. But some of them wired. There is some evidence that more than just the Weilisi DM-300 exist; one guy tells about recording electric guitar with Weilisi DM-200 with good results.
So, bottom line: The DM-300 is a cardioid dynamic, and that’s basically all we can say about it. But it looks really funky! Not your standard SM58 ice cream cone – there’s something drastically retrofuturistic and at the same time very socialist about it (reminded me of some Czech Tesla handheld mics), and it looks tragically late 80s at the same time.